Notebookcheck

Dell Latitude 7400 Laptop Review: Even the high end is not free from weaknesses

Sascha Mölck, 👁 Andreas Osthoff, Felicitas Krohn (translated by Todor Gerganov), 09/21/2019

Business High End. Dell's 14-inch business laptop boasts a long battery life, an excellent keyboard and a fast NVMe SSD. The matte IPS display, however, could have a greater maximum brightness. In addition, the fan emits a high-pitched whistling noise.

The Latitude 7490 is followed by the Latitude 7400 - Dell starts counting from the front. The new model of the 14-inch high-end business laptop is a bit more compact and lighter compared to its predecessor. However, it is easily noticeable as a successor to the 7490. There is not much going on inside: Kaby Lake processors are replaced by Whiskey Lake ones. The Latitude 7400 is also available in a 2-in-1 version, which we have already tested.

The competitors of the Latitude can be found among the high-end models of the major laptop manufacturers. To be mentioned here are the HP Elitebook 840 G5, the HP Elitebook 745 G5, the Lenovo Thinkpad T490s and Thinkpad T495s respectively, the Toshiba Tecra X40-E and the Lenovo Thinkpad X1 Carbon 2019.

Dell Latitude 7400-8N6DH (Latitude 14 Series)
Graphics adapter
Intel UHD Graphics 620, Core: 300-1150 MHz, Memory: 1200 MHz, Single-Channel, 26.20.100.6860
Memory
16384 MB 
, DDR4-2666, Single-Channel, two memory slots (one occupied)
Display
14 inch 16:9, 1920 x 1080 pixel 157 PPI, AU Optronics B140HAN, IPS, glossy: no
Mainboard
Intel Cannon Lake-U PCH-LP Premium
Storage
Samsung SSD PM981 MZVLB512HAJQ, 512 GB 
, 441 GB free
Soundcard
Realtek ALC295 @ Intel Cannon Point PCH - cAVS
Connections
2 USB 3.0 / 3.1 Gen1, 1 USB 3.1 Gen2, 1 Thunderbolt, 1 HDMI, 1 DisplayPort, 1 Kensington Lock, Audio Connections: 3.5 mm combined microphone and headphone jack, Card Reader: microSD, 1 SmartCard, 1 Fingerprint Reader, TPM 2.0
Networking
Intel Wireless-AC 9560 (a/b/g/n = Wi-Fi 4/ac = Wi-Fi 5), Bluetooth 5.0
Size
height x width x depth (in mm): 18.9 x 321 x 214 ( = 0.74 x 12.64 x 8.43 in)
Battery
60 Wh, 7500 mAh Lithium-Polymer, 4-cell
Charging
fast charging / Quickcharge
Operating System
Microsoft Windows 10 Pro 64 Bit
Camera
Webcam: HD 720p
Primary Camera: 0.9 MPix
Additional features
Speakers: Stereo, Keyboard: Chiclet, Keyboard Light: yes, 36 Months Warranty
Weight
1.535 kg ( = 54.15 oz / 3.38 pounds), Power Supply: 309 g ( = 10.9 oz / 0.68 pounds)
Price
1599 Euro
Note: The manufacturer may use components from different suppliers including display panels, drives or memory sticks with similar specifications.

 

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Case - Slim and Stylish Metal Body

Dell is relying on a sleek and slim metal case also with the new Latitude 74xx model. Extravagant colors are not likely to be found in the business sector and the Latitude is no exception. Almost the entire device is thus kept in a matte silver gray. In addition, the back cover and the top of the base unit are provided with a brushed look. The display frame is colored in black. The computer does not have a maintenance flap. To get to the hardware, the bottom panel would have to be dismantled - more on that later. The battery is firmly installed.

The craftsmanship of the Latitude is perfect. The gap widths are correct and there are no protrusions and/or sharp edges. Everything is fine also in terms of stability. The case cannot be arched when held near the sides of the keyboard and underneath the touchpad. The base unit shows sufficient rigidity too. The lid can be slightly twisted, but everything is still within reasonable limits. However, the display shows no image distortion, not even when pressure is applied on the back of the lid. The hinges hold the lid firmly in position. They bounce slightly, at most. Furthermore, it is possible to open the lid using one hand only. The maximum opening angle is 180 degrees.

The relationship between Latitude 7400 and 7490 can be noticed immediately. However, the 7400 is a bit more compact and lighter. The smaller dimensions also lead to narrower display bezels, which significantly increases the attractiveness of the laptop. Within our comparison field, the Latitude is one of the heaviest devices. Lenovo's competition weighs a few hundred grams (few ounces) less.

Size Comparison

332 mm / 13.1 inch 228.9 mm / 9.01 inch 16.9 mm / 0.665 inch 1.3 kg2.76 lbs331 mm / 13 inch 220.9 mm / 8.7 inch 17.9 mm / 0.705 inch 1.6 kg3.44 lbs329 mm / 13 inch 225.8 mm / 8.89 inch 16.1 mm / 0.634 inch 1.3 kg2.8 lbs328.8 mm / 12.9 inch 225.8 mm / 8.89 inch 16.1 mm / 0.634 inch 1.3 kg2.82 lbs326 mm / 12.8 inch 234 mm / 9.21 inch 17.9 mm / 0.705 inch 1.5 kg3.4 lbs326 mm / 12.8 inch 234 mm / 9.21 inch 17.9 mm / 0.705 inch 1.5 kg3.26 lbs321 mm / 12.6 inch 214 mm / 8.43 inch 18.9 mm / 0.744 inch 1.5 kg3.38 lbs323.5 mm / 12.7 inch 217.1 mm / 8.55 inch 14.9 mm / 0.587 inch 1.1 kg2.45 lbs323.5 mm / 12.7 inch 217.1 mm / 8.55 inch 14.9 mm / 0.587 inch 1.1 kg2.45 lbs

Equipment - Thunderbolt 3 on Board

The Latitude cannot impress with an abundance of interfaces. Nevertheless, the most necessary connections are available. The two Type A USB ports work in accordance with the USB 3.2 Gen 1 standard. The Thunderbolt 3 port allows the connection of docking solutions and/or an external, powerful GPU. The machine can also be supplied with power via this port (Power Delivery 3.0). DisplayPort over USB-C is also available (this requires a separate adapter). Thus, the laptop has two video outputs together with the HDMI connection.

Those who know the predecessor model will notice the lack of a SIM card slot and a Gigabit Ethernet port. The latter has been dropped out completely. If necessary, a corresponding USB adapter would have to be used. However, models with SIM card slot and LTE modem are still available as configuration options.

Left-hand side: power connector, Thunderbolt 3, HDMI, USB 3.2 Gen 1 (Type A)
Left-hand side: power connector, Thunderbolt 3, HDMI, USB 3.2 Gen 1 (Type A)
Right-hand side: combo headphone/microphone jack, memory card reader (MicroSD), USB 3.2 Gen 1 (Type A), cable lock slot
Right-hand side: combo headphone/microphone jack, memory card reader (MicroSD), USB 3.2 Gen 1 (Type A), cable lock slot

SD Card Reader

The built-in MicroSD memory card reader works very fast. When copying large blocks of data, a maximum transfer rate of 205 MB/s is achieved. The transfer of 250 JPG image files (each about 5 MB) is completed with a speed of 188 MB/s. We test the memory card reader with a reference card (Toshiba Exceria Pro M501 microSDXC 64GB).

SDCardreader Transfer Speed
average JPG Copy Test (av. of 3 runs)
Dell Latitude 7400-8N6DH
  (Toshiba Exceria Pro M501 64 GB UHS-II)
180 MB/s ∼100%
Dell Latitude 7400 2-in-1
  (Toshiba Exceria Pro M501 UHS-II)
172.1 MB/s ∼96% -4%
Dell Latitude 7490
  (Toshiba Exceria Pro M501 UHS-II)
137.6 MB/s ∼76% -24%
Lenovo ThinkPad T495s-20QKS01E00
  (Toshiba Exceria Pro M501 64 GB UHS-II)
78.8 MB/s ∼44% -56%
Lenovo ThinkPad T490s-20NYS02A00
  (Toshiba Exceria Pro M501)
68.3 MB/s ∼38% -62%
Average of class Office
  (10.2 - 191, n=280)
62.8 MB/s ∼35% -65%
Toshiba Tecra X40-E-10W
  (Toshiba Exceria Pro M501 microSDXC 64GB)
62 MB/s ∼34% -66%
maximum AS SSD Seq Read Test (1GB)
Dell Latitude 7400 2-in-1
  (Toshiba Exceria Pro M501 UHS-II)
209.62 MB/s ∼100% +2%
Dell Latitude 7400-8N6DH
  (Toshiba Exceria Pro M501 64 GB UHS-II)
205 MB/s ∼98%
Dell Latitude 7490
  (Toshiba Exceria Pro M501 UHS-II)
203.2 MB/s ∼97% -1%
Lenovo ThinkPad T495s-20QKS01E00
  (Toshiba Exceria Pro M501 64 GB UHS-II)
90.2 MB/s ∼43% -56%
Lenovo ThinkPad T490s-20NYS02A00
  (Toshiba Exceria Pro M501)
87.8 MB/s ∼42% -57%
Toshiba Tecra X40-E-10W
  (Toshiba Exceria Pro M501 microSDXC 64GB)
86.5 MB/s ∼41% -58%
Average of class Office
  (9.5 - 255, n=255)
79.4 MB/s ∼38% -61%

Communication

The Latitude comes with a WLAN module with a chip from Intel (Wireless-AC 9560). In addition to the 802.11 a/b/g/n WLAN standards, it also supports the fast ac standard (2.4 and 5 GHz). The transmission speeds determined by us under optimal conditions (no other WLAN devices in the immediate vicinity, small distance between laptop and server PC) are very good. 

Optionally, the 7400 can also be equipped with an LTE modem. Thus, connecting to the Internet or the corporate intranet is also possible via the cellular network. Our test device has a SIM card reader and a slot for an LTE modem. However, it lacks the necessary antennas and the physical SIM card slot.

Networking
iperf3 Client (receive) TCP 1 m 4M x10
Dell Latitude 7400 2-in-1
Intel Wireless-AC 9560
655 MBit/s ∼100% 0%
Dell Latitude 7400-8N6DH
Intel Wireless-AC 9560
652 MBit/s ∼100%
Dell Latitude 7490
Intel Dual Band Wireless-AC 8265
650 MBit/s ∼99% 0%
Lenovo ThinkPad T490s-20NYS02A00
Intel Wireless-AC 9560
648 MBit/s ∼99% -1%
Lenovo ThinkPad T495s-20QKS01E00
Intel Wireless-AC 9260
618 MBit/s ∼94% -5%
Lenovo ThinkPad X1 Carbon 2019-20QE000VGE
Intel Wireless-AC 9560
617 MBit/s ∼94% -5%
Toshiba Tecra X40-E-10W
Intel Dual Band Wireless-AC 8265
529 MBit/s ∼81% -19%
HP EliteBook 840 G5-3JX61EA
Intel Dual Band Wireless-AC 8265
524 MBit/s ∼80% -20%
Average of class Office
  (5 - 688, n=224)
469 MBit/s ∼72% -28%
HP EliteBook 745 G5 3UN74EA
Intel Dual Band Wireless-AC 8265
409 MBit/s ∼62% -37%
iperf3 Client (transmit) TCP 1 m 4M x10
Lenovo ThinkPad T490s-20NYS02A00
Intel Wireless-AC 9560
667 MBit/s ∼100% +1%
HP EliteBook 840 G5-3JX61EA
Intel Dual Band Wireless-AC 8265
663 MBit/s ∼99% 0%
Dell Latitude 7400-8N6DH
Intel Wireless-AC 9560
663 MBit/s ∼99%
Lenovo ThinkPad T495s-20QKS01E00
Intel Wireless-AC 9260
658 MBit/s ∼99% -1%
Lenovo ThinkPad X1 Carbon 2019-20QE000VGE
Intel Wireless-AC 9560
652 MBit/s ∼98% -2%
Toshiba Tecra X40-E-10W
Intel Dual Band Wireless-AC 8265
620 MBit/s ∼93% -6%
Dell Latitude 7400 2-in-1
Intel Wireless-AC 9560
607 MBit/s ∼91% -8%
HP EliteBook 745 G5 3UN74EA
Intel Dual Band Wireless-AC 8265
593 MBit/s ∼89% -11%
Dell Latitude 7490
Intel Dual Band Wireless-AC 8265
513 MBit/s ∼77% -23%
Average of class Office
  (34 - 688, n=224)
446 MBit/s ∼67% -33%

Webcam

The maximum resolution of images taken by the webcam is 1280x720 pixels. The produced results are somewhat washed out.

Security

The Dell laptop in our test comes with a smart card reader and a fingerprint reader for biometric access protection - both components are available as an option. The fingerprint reader is embedded in the power button. In addition, there is a Trusted Platform Module (2.0) on board.

Accessories

Apart from the usual documentation (quick start guide, warranty information) the Latitude does not come with any accessories. Dell still has a lot of paid accessories for the laptop. Most interesting would be the various docking solutions such as the Dell Thunderbolt Dock WD19TB, with which the Latitude could be extended by many interfaces. The price is around 250 to 300 Euros (~ $277 to $332).

Dell Thundebolt Dock WD19TB
Dell Thundebolt Dock WD19TB
Dell Thundebolt Dock WD19TB
Dell Thundebolt Dock WD19TB

BIOS

The computer's BIOS offers extensive configuration options in terms of security, administration, hardware and energy requirements. For example, you can set the number of active CPU cores. Moreover, the user can decide whether the CPU turbo should be used or not.

Maintenance

Even though the laptop does not have a maintenance flap, maintenance/upgrade of the device is not a problem. To get to the innards, only eight screws on the bottom of the device need to be loosened. Subsequently, the bottom panel can be removed - this works most easily in the area of the fan opening. Additional tools are not necessary. One has then access to the memory modules, the SSD, the battery, the WLAN module, the fan and the BIOS battery.

Warranty

The Latitude comes with a three-year on-site warranty. Dell offers extensive expansion options. For example, a five-year ProSupport Plus warranty with on-site service on the next business day costs around 411 Euros/~$455 (the service package is available at around 214 Euros/~$237 for a limited period as of the time of testing).

Input Devices - Excellent Keyboard

Keyboard

Dell has equipped the Latitude with a backlit chiclet keyboard, the layout of which has not changed compared to its predecessor. The key spacing of 5 mm (~0.2 in) and the sufficient key size offer a very pleasant typing experience. The "Enter" key and the arrow keys could be slightly larger though. However, these are complaints at a high level. 

The slightly concave, smooth buttons provide a medium stroke and a clear pressure point. Added to this is a crisp key resistance that pleases us very much. While typing, the keyboard does not yield. The key illumination offers two brightness levels, which are set via a function key. Overall, the keyboard has made an excellent impression and is one of the best models we have tested so far.

Touchpad

The touchpad supports multi-touch and occupies an area of about 10x5.2 cm (~ 3.94x2.05 in). The smooth surface makes it easy for the fingers to glide. The pad responds promptly to inputs - even in the corners. The two separate mouse buttons on the pad have a short stroke and a clear pressure point.

Input devices
Input devices

Display - IPS, but a Bit Too Dark

The matte 14-inch display of the Latitude has a native resolution of 1920x1080 pixels. While the contrast we measured (1806:1) is good, there is more to be desired in terms of brightness (285.6 cd/m²), especially given the price level of the device. Within our comparison field, the display of the 7400 is one of the models with the lowest brightness. Worse is only the display of the Toshiba Tecra X40-E. We consider values beyond 300 cd/m² good. A positive fact: The Latitude display shows no PWM flicker.

Another note regarding the display brightness: The Latitude's BIOS offers the option of setting the maximum display brightness for both AC and battery mode. If the display appears too dark in battery mode, the solution could be found in the BIOS.

Pixel grid
Pixel grid
Backlight bleeding
Backlight bleeding
The maximum brightness can be set in the BIOS
The maximum brightness can be set in the BIOS
295
cd/m²
303
cd/m²
298
cd/m²
276
cd/m²
289
cd/m²
275
cd/m²
277
cd/m²
282
cd/m²
275
cd/m²
Distribution of brightness
AU Optronics B140HAN
X-Rite i1Pro 2
Maximum: 303 cd/m² Average: 285.6 cd/m² Minimum: 15.9 cd/m²
Brightness Distribution: 91 %
Center on Battery: 290 cd/m²
Contrast: 1806:1 (Black: 0.16 cd/m²)
ΔE Color 4.7 | 0.6-29.43 Ø6, calibrated: 1.3
ΔE Greyscale 6.4 | 0.64-98 Ø6.2
95.1% sRGB (Argyll 3D) 61.2% AdobeRGB 1998 (Argyll 3D)
Gamma: 2.54
Dell Latitude 7400-8N6DH
IPS, 1920x1080, 14
Dell Latitude 7490
IPS, 1920x1080, 14
Lenovo ThinkPad X1 Carbon 2019-20QES01L00
IPS, 1920x1080, 14
HP EliteBook 745 G5 3UN74EA
IPS LED, 1920x1080, 14
HP EliteBook 840 G5-3JX61EA
IPS, 1920x1080, 14
Lenovo ThinkPad T490s-20NYS02A00
IPS, 1920x1080, 14
Toshiba Tecra X40-E-10W
IPS, 1920x1080, 14
Lenovo ThinkPad X1 Carbon 2019-20QE000VGE
IPS, 2560x1440, 14
Response Times
24%
28%
39%
39%
-1%
53%
41%
Response Time Grey 50% / Grey 80% *
62 (29.6, 32.4)
41.6 (22, 19.6)
33%
44.8 (21.2, 23.6)
28%
35 (17, 18)
44%
33 (15, 18)
47%
61.6 (30.8, 30.8)
1%
22 (12, 10)
65%
33.6 (16.4, 17.2)
46%
Response Time Black / White *
37.6 (21.2, 16.4)
32 (16.4, 15.6)
15%
27.6 (15.6, 12)
27%
25 (15, 10)
34%
26 (15, 11)
31%
38.8 (21.2, 17.6)
-3%
22 (12, 10)
41%
24 (12.4, 11.6)
36%
PWM Frequency
3125 (90)
21000 (90)
Screen
-14%
3%
6%
-7%
13%
-10%
-17%
Brightness middle
289
308.6
7%
381
32%
421
46%
655
127%
391
35%
266
-8%
338
17%
Brightness
286
294
3%
375
31%
398
39%
630
120%
389
36%
244
-15%
315
10%
Brightness Distribution
91
89
-2%
94
3%
86
-5%
93
2%
87
-4%
86
-5%
88
-3%
Black Level *
0.16
0.23
-44%
0.24
-50%
0.27
-69%
0.56
-250%
0.23
-44%
0.2
-25%
0.43
-169%
Contrast
1806
1342
-26%
1588
-12%
1559
-14%
1170
-35%
1700
-6%
1330
-26%
786
-56%
Colorchecker DeltaE2000 *
4.7
6.07
-29%
4.6
2%
4.08
13%
3.27
30%
3.4
28%
4.61
2%
4
15%
Colorchecker DeltaE2000 max. *
8.7
10.58
-22%
8.5
2%
7.48
14%
5.92
32%
4.7
46%
7.46
14%
7.9
9%
Colorchecker DeltaE2000 calibrated *
1.3
1.67
-28%
1.2
8%
3.22
-148%
1.1
15%
1.7
-31%
Greyscale DeltaE2000 *
6.4
7.3
-14%
5.1
20%
2.92
54%
2.85
55%
4
37%
4.31
33%
6.2
3%
Gamma
2.54 87%
2.061 107%
2.52 87%
2.32 95%
2.45 90%
2.49 88%
2.54 87%
2.13 103%
CCT
5977 109%
7269 89%
7052 92%
7043 92%
6065 107%
6809 95%
6848 95%
6787 96%
Color Space (Percent of AdobeRGB 1998)
61.2
62
1%
60.7
-1%
57
-7%
57
-7%
62.4
2%
39
-36%
68.1
11%
Color Space (Percent of sRGB)
95.1
97
2%
95.7
1%
87
-9%
88
-7%
97.4
2%
61
-36%
97.8
3%
Total Average (Program / Settings)
5% / -8%
16% / 7%
23% / 12%
16% / -0%
6% / 11%
22% / 0%
12% / -8%

* ... smaller is better

Even at delivery, the display shows a decent color representation. However, with a Delta E 2000 color deviation of 4.7, the target (Delta E less than 3) is missed. The display does not suffer from a blue cast. A calibration can still result in a significant improvement. When done, the color deviation drops to 1.3 and the gray levels are displayed more balanced. The AdobeRGB and sRGB color spaces are not fully covered by the display. Coverage rates here are 61.2 percent (AdobeRGB) and 95.1 percent (sRGB).

The color profile we provide can improve the color appearance of the display according to the calibration we have made. It is important to ensure that the same display model (manufacturer + model number) is installed as in our test device. Otherwise, the color representation may deteriorate rather than improve. Within a laptop model series displays from different manufacturers are often used.

CalMAN - Color Accuracy
CalMAN - Color Accuracy
CalMAN - Grayscale
CalMAN - Grayscale
CalMAN - Color Saturation
CalMAN - Color Saturation
CalMAN - Color Accuracy (calibrated)
CalMAN - Color Accuracy (calibrated)
CalMAN - Grayscale (calibrated)
CalMAN - Grayscale (calibrated)
CalMAN - Color Saturation (calibrated)
CalMAN - Color Saturation (calibrated)
Latitude vs. sRGB
Latitude vs. sRGB
Latitude vs. AdobeRGB
Latitude vs. AdobeRGB

Display Response Times

Display response times show how fast the screen is able to change from one color to the next. Slow response times can lead to afterimages and can cause moving objects to appear blurry (ghosting). Gamers of fast-paced 3D titles should pay special attention to fast response times.
       Response Time Black to White
37.6 ms ... rise ↗ and fall ↘ combined↗ 21.2 ms rise
↘ 16.4 ms fall
The screen shows slow response rates in our tests and will be unsatisfactory for gamers.
In comparison, all tested devices range from 0.8 (minimum) to 240 (maximum) ms. » 94 % of all devices are better.
This means that the measured response time is worse than the average of all tested devices (24.9 ms).
       Response Time 50% Grey to 80% Grey
62 ms ... rise ↗ and fall ↘ combined↗ 29.6 ms rise
↘ 32.4 ms fall
The screen shows slow response rates in our tests and will be unsatisfactory for gamers.
In comparison, all tested devices range from 0.9 (minimum) to 636 (maximum) ms. » 96 % of all devices are better.
This means that the measured response time is worse than the average of all tested devices (39.6 ms).

Screen Flickering / PWM (Pulse-Width Modulation)

To dim the screen, some notebooks will simply cycle the backlight on and off in rapid succession - a method called Pulse Width Modulation (PWM) . This cycling frequency should ideally be undetectable to the human eye. If said frequency is too low, users with sensitive eyes may experience strain or headaches or even notice the flickering altogether.
Screen flickering / PWM not detected

In comparison: 51 % of all tested devices do not use PWM to dim the display. If PWM was detected, an average of 9258 (minimum: 43 - maximum: 142900) Hz was measured.

Dell delivers the Latitude with a viewing angle stable IPS panel. Thus, the display can be read from any position. Outdoors, this is much more difficult due to its insufficient brightness. The display used by the manufacturer makes the laptop primarily suitable for use inside buildings.

The Latitude outdoors (shot in sunshine; the sun is behind the device)
The Latitude outdoors (shot in sunshine; the sun is behind the device)
The Latitude outdoors (shot in sunshine; direct sunlight)
The Latitude outdoors (shot in sunshine; direct sunlight)
Viewing angles
Viewing angles

Performance - The Power of Core i7

The Dell Latitude 7400 is one of the high-end 14-inch business laptops. The built-in processor offers enough computing power for Office and Internet applications. Our test device can be obtained for about 1500 to 1600 Euros (~ $1658 to $1768). Other configuration options are available. Prices start at around 1300 Euros (~$1437).

CPU-Z
CPU-Z
CPU-Z
CPU-Z
CPU-Z
GPU-Z
HWInfo
LatencyMon
Intel XTU
 

Test Conditions

Dell Power Manager
Dell Power Manager

All our tests were conducted with the "balanced" energy profile of Windows 10 activated. Windows control panel does not offer any other profiles on the 7400. In addition, the Dell Power Manager provides options to influence the energy and temperature management. The available options affect the noise and the performance levels of the machine. Our choice here is the "Optimized" option. Although we have tried it, the "Ultra Performance" option does not increase the performance of our review unit.

Processor

The Latitude is powered by a Core i7-8665U (Whiskey Lake) quad-core processor that provides enough computing power for Office and Internet applications. The CPU is primarily intended for business laptops and supports Intel's vPro technology accordingly. The processor has a TDP of 15 watts. Dell allows a short-term increase to max. 51 watts. The Core i7 operates at a base clock speed of 1.9 GHz. With Turbo on, an increase to 4.8 GHz is possible.

The CPU processes the multi-thread tests of the Cinebench benchmarks at 4 to 4.2 GHz for a short time. Then the frequency drops quickly and gradually to 2.9-3 GHz. The single-thread tests are processed at 4.2 to 4.8 GHz. In battery mode, the clock rates are 1.8 to 2.2 GHz (multi-thread) and 1.4 to 1.8 GHz (single-thread).

Thus, the Latitude cannot provide a lot of CPU power in battery mode. The Cinebench R15 benchmark achieves 60 points (single-thread) and 311 points (multi-thread).

Multi-thread (AC mode)
Multi-thread (AC mode)
Single-thread (AC mode)
Single-thread (AC mode)
Multi-thread (battery mode)
Multi-thread (battery mode)
Single-thread (battery mode)
Single-thread (battery mode)

To determine whether the CPU turbo is used permanently in AC mode, we check by running the multi-thread test of the Cinebench R15 benchmark for at least 30 minutes in a continuous loop. The results drop by about 22 percent in the first 15 minutes of the test and then remain at a constant level. The turbo is used at a low level.

The Latitude does not deliver outstanding values. A look at the comparison chart shows that the Lenovo Thinkpad X1 Carbon 2019 gets more power out of the same CPU.

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Dell Latitude 7400-8N6DH Intel Core i7-8665U, Intel Core i7-8665U: Ø544 (523.43-667.87)
Lenovo ThinkPad X1 Carbon 2019-20QE000VGE Intel Core i7-8665U, Intel Core i7-8665U: Ø632 (574.56-701.36)
HP EliteBook 745 G5 3UN74EA AMD Ryzen 7 2700U, AMD Ryzen 7 2700U: Ø539 (523-626)
HP EliteBook 840 G5-3JX61EA Intel Core i7-8550U, Intel Core i7-8550U: Ø526 (517.01-554.05)
Toshiba Tecra X40-E-10W Intel Core i5-8250U, Intel Core i5-8250U: Ø475 (472.17-500.76)
Dell Latitude 7490 Intel Core i5-8350U, Intel Core i5-8350U: Ø531 (519.92-595.49)
Dell Latitude 7400 2-in-1 Intel Core i7-8665U, Intel Core i7-8665U: Ø550 (527.93-598.95)
Lenovo ThinkPad T490s-20NYS02A00 Intel Core i5-8265U, Intel Core i5-8265U: Ø584 (566.02-686.12)
Lenovo ThinkPad T495s-20QKS01E00 AMD Ryzen 7 PRO 3700U, AMD Ryzen 7 PRO 3700U: Ø578 (565.26-658.27)
CPU clock rates during the execution of the CB15 loop
CPU clock rates during the execution of the CB15 loop
Cinebench R10 Rendering Single 32Bit
7028
Cinebench R10 Rendering Multiple CPUs 32Bit
20251
Cinebench R10 Shading 32Bit
5882
Cinebench R15 CPU Multi 64Bit
674 Points
Cinebench R15 OpenGL 64Bit
48.2 fps
Cinebench R15 Ref. Match 64Bit
98 %
Cinebench R15 CPU Single 64Bit
181 Points
Help
Cinebench R15
CPU Single 64Bit
Dell Latitude 7400-8N6DH
Intel Core i7-8665U
181 Points ∼100%
Lenovo ThinkPad X1 Carbon 2019-20QE000VGE
Intel Core i7-8665U
180 Points ∼99% -1%
Average Intel Core i7-8665U
  (143 - 199, n=6)
177 Points ∼98% -2%
Dell Latitude 7400 2-in-1
Intel Core i7-8665U
176 Points ∼97% -3%
HP EliteBook 840 G5-3JX61EA
Intel Core i7-8550U
167 Points ∼92% -8%
Lenovo ThinkPad T490s-20NYS02A00
Intel Core i5-8265U
162 Points ∼90% -10%
Dell Latitude 7490
Intel Core i5-8350U
153 Points ∼85% -15%
Lenovo ThinkPad T495s-20QKS01E00
AMD Ryzen 7 PRO 3700U
149 Points ∼82% -18%
Toshiba Tecra X40-E-10W
Intel Core i5-8250U
144 Points ∼80% -20%
HP EliteBook 745 G5 3UN74EA
AMD Ryzen 7 2700U
143 Points ∼79% -21%
Average of class Office
  (20 - 199, n=538)
112 Points ∼62% -38%
CPU Multi 64Bit
Lenovo ThinkPad X1 Carbon 2019-20QE000VGE
Intel Core i7-8665U
701 (min: 574.56, max: 701.36) Points ∼100% +4%
Lenovo ThinkPad T490s-20NYS02A00
Intel Core i5-8265U
686 (min: 566.02, max: 686.12) Points ∼98% +2%
Dell Latitude 7400-8N6DH
Intel Core i7-8665U
674 Points ∼96%
Lenovo ThinkPad T495s-20QKS01E00
AMD Ryzen 7 PRO 3700U
658 Points ∼94% -2%
HP EliteBook 745 G5 3UN74EA
AMD Ryzen 7 2700U
630 Points ∼90% -7%
Average Intel Core i7-8665U
  (496 - 701, n=6)
602 Points ∼86% -11%
Dell Latitude 7490
Intel Core i5-8350U
569 Points ∼81% -16%
HP EliteBook 840 G5-3JX61EA
Intel Core i7-8550U
554 Points ∼79% -18%
Dell Latitude 7400 2-in-1
Intel Core i7-8665U
524 Points ∼75% -22%
Toshiba Tecra X40-E-10W
Intel Core i5-8250U
501 Points ∼71% -26%
Average of class Office
  (36 - 1103, n=545)
346 Points ∼49% -49%
Cinebench R10
Rendering Single 32Bit
Dell Latitude 7400-8N6DH
Intel Core i7-8665U
7028 Points ∼100%
Average Intel Core i7-8665U
  (6716 - 7028, n=2)
6872 Points ∼98% -2%
Dell Latitude 7400 2-in-1
Intel Core i7-8665U
6716 Points ∼96% -4%
HP EliteBook 840 G5-3JX61EA
Intel Core i7-8550U
6391 Points ∼91% -9%
Toshiba Tecra X40-E-10W
Intel Core i5-8250U
5519 Points ∼79% -21%
Average of class Office
  (667 - 8356, n=680)
3338 Points ∼47% -53%
Rendering Multiple CPUs 32Bit
Dell Latitude 7400-8N6DH
Intel Core i7-8665U
20251 Points ∼100%
Average Intel Core i7-8665U
  (16602 - 20251, n=2)
18427 Points ∼91% -9%
HP EliteBook 840 G5-3JX61EA
Intel Core i7-8550U
17281 Points ∼85% -15%
Dell Latitude 7400 2-in-1
Intel Core i7-8665U
16602 Points ∼82% -18%
Toshiba Tecra X40-E-10W
Intel Core i5-8250U
15973 Points ∼79% -21%
Average of class Office
  (1242 - 32009, n=668)
7877 Points ∼39% -61%
Cinebench R20
CPU (Single Core)
Dell Latitude 7400-8N6DH
Intel Core i7-8665U
445 Points ∼100%
Average Intel Core i7-8665U
  (412 - 472, n=4)
439 Points ∼99% -1%
Lenovo ThinkPad X1 Carbon 2019-20QE000VGE
Intel Core i7-8665U
427 Points ∼96% -4%
Lenovo ThinkPad T490s-20NYS02A00
Intel Core i5-8265U
403 Points ∼91% -9%
Average of class Office
  (79 - 472, n=32)
353 Points ∼79% -21%
CPU (Multi Core)
Lenovo ThinkPad T490s-20NYS02A00
Intel Core i5-8265U
1486 Points ∼100% +2%
Dell Latitude 7400-8N6DH
Intel Core i7-8665U
1453 Points ∼98%
Average Intel Core i7-8665U
  (1267 - 1530, n=4)
1399 Points ∼94% -4%
Lenovo ThinkPad X1 Carbon 2019-20QE000VGE
Intel Core i7-8665U
1346 Points ∼91% -7%
Average of class Office
  (143 - 2598, n=32)
1262 Points ∼85% -13%
Geekbench 3
32 Bit Multi-Core Score
Dell Latitude 7400-8N6DH
Intel Core i7-8665U
14277 Points ∼100%
Average Intel Core i7-8665U
 
14277 Points ∼100% 0%
HP EliteBook 840 G5-3JX61EA
Intel Core i7-8550U
13931 Points ∼98% -2%
Toshiba Tecra X40-E-10W
Intel Core i5-8250U
12557 Points ∼88% -12%
Average of class Office
  (1016 - 14277, n=191)
5803 Points ∼41% -59%
32 Bit Single-Core Score
HP EliteBook 840 G5-3JX61EA
Intel Core i7-8550U
4020 Points ∼100% +3%
Dell Latitude 7400-8N6DH
Intel Core i7-8665U
3887 Points ∼97%
Average Intel Core i7-8665U
 
3887 Points ∼97% 0%
Toshiba Tecra X40-E-10W
Intel Core i5-8250U
3158 Points ∼79% -19%
Average of class Office
  (595 - 4820, n=191)
2325 Points ∼58% -40%
Geekbench 4.4
64 Bit Multi-Core Score
Lenovo ThinkPad X1 Carbon 2019-20QE000VGE
Intel Core i7-8665U
17234 Points ∼100% +11%
HP EliteBook 840 G5-3JX61EA
Intel Core i7-8550U
16294 Points ∼95% +5%
Lenovo ThinkPad T490s-20NYS02A00
Intel Core i5-8265U
16249 Points ∼94% +5%
Average Intel Core i7-8665U
  (11206 - 18275, n=4)
15544 Points ∼90% +1%
Dell Latitude 7400-8N6DH
Intel Core i7-8665U
15460 Points ∼90%
Toshiba Tecra X40-E-10W
Intel Core i5-8250U
12751 Points ∼74% -18%
Lenovo ThinkPad T495s-20QKS01E00
AMD Ryzen 7 PRO 3700U
11249 Points ∼65% -27%
Dell Latitude 7400 2-in-1
Intel Core i7-8665U
11206 Points ∼65% -28%
Average of class Office
  (1736 - 21722, n=82)
9475 Points ∼55% -39%
64 Bit Single-Core Score
Lenovo ThinkPad X1 Carbon 2019-20QE000VGE
Intel Core i7-8665U
5407 Points ∼100% +2%
Dell Latitude 7400-8N6DH
Intel Core i7-8665U
5278 Points ∼98%
Average Intel Core i7-8665U
  (4686 - 5574, n=4)
5236 Points ∼97% -1%
HP EliteBook 840 G5-3JX61EA
Intel Core i7-8550U
4997 Points ∼92% -5%
Lenovo ThinkPad T490s-20NYS02A00
Intel Core i5-8265U
4830 Points ∼89% -8%
Dell Latitude 7400 2-in-1
Intel Core i7-8665U
4686 Points ∼87% -11%
Toshiba Tecra X40-E-10W
Intel Core i5-8250U
4007 Points ∼74% -24%
Lenovo ThinkPad T495s-20QKS01E00
AMD Ryzen 7 PRO 3700U
3928 Points ∼73% -26%
Average of class Office
  (957 - 5574, n=82)
3629 Points ∼67% -31%
Geekbench 5
64 Bit Multi-Core Score
Dell Latitude 7400-8N6DH
Intel Core i7-8665U
3453 Points ∼100%
Average Intel Core i7-8665U
 
3453 Points ∼100% 0%
Lenovo ThinkPad T495s-20QKS01E00
AMD Ryzen 7 PRO 3700U
3091 Points ∼90% -10%
Average of class Office
  (2096 - 3453, n=4)
2903 Points ∼84% -16%
64 Bit Single-Core Score
Dell Latitude 7400-8N6DH
Intel Core i7-8665U
1196 Points ∼100%
Average Intel Core i7-8665U
 
1196 Points ∼100% 0%
Average of class Office
  (839 - 1196, n=4)
1004 Points ∼84% -16%
Lenovo ThinkPad T495s-20QKS01E00
AMD Ryzen 7 PRO 3700U
839 Points ∼70% -30%
Mozilla Kraken 1.1 - Total Score
Average of class Office
  (872 - 9672, n=253)
2049 ms * ∼100% -98%
HP EliteBook 745 G5 3UN74EA
AMD Ryzen 7 2700U (Edge)
1547.7 ms * ∼76% -50%
Lenovo ThinkPad T495s-20QKS01E00
AMD Ryzen 7 PRO 3700U (Edge 44.18362.1.0)
1278.1 ms * ∼62% -24%
Dell Latitude 7490
Intel Core i5-8350U (Microsoft Edge 42.17134.1.0)
1256.3 ms * ∼61% -22%
Lenovo ThinkPad T490s-20NYS02A00
Intel Core i5-8265U (Edge 44)
1167.5 ms * ∼57% -13%
Dell Latitude 7400 2-in-1
Intel Core i7-8665U (Microsoft Edge 44.18362.1.0)
1135.6 ms * ∼55% -10%
Lenovo ThinkPad X1 Carbon 2019-20QE000VGE
Intel Core i7-8665U (Edge 44.18362.1.0)
1101.4 ms * ∼54% -7%
Average Intel Core i7-8665U
  (1016 - 1136, n=4)
1072 ms * ∼52% -4%
Dell Latitude 7400-8N6DH
Intel Core i7-8665U (Edge 44)
1033.8 ms * ∼50%
Octane V2 - Total Score
Dell Latitude 7400-8N6DH
Intel Core i7-8665U (Edge 44)
36667 Points ∼100%
Average Intel Core i7-8665U
  (30142 - 36667, n=4)
33976 Points ∼93% -7%
Lenovo ThinkPad X1 Carbon 2019-20QE000VGE
Intel Core i7-8665U (Edge 44.18362.1.0)
33577 Points ∼92% -8%
Lenovo ThinkPad T490s-20NYS02A00
Intel Core i5-8265U (Edge 44)
33363 Points ∼91% -9%
Dell Latitude 7400 2-in-1
Intel Core i7-8665U (Microsoft Edge 44.18362.1.0)
30142 Points ∼82% -18%
Dell Latitude 7490
Intel Core i5-8350U (Microsoft Edge 42.17134.1.0)
28223 Points ∼77% -23%
Lenovo ThinkPad T495s-20QKS01E00
AMD Ryzen 7 PRO 3700U (Edge 44.18362.1.0)
27979 Points ∼76% -24%
HP EliteBook 745 G5 3UN74EA
AMD Ryzen 7 2700U (Edge)
26615 Points ∼73% -27%
Average of class Office
  (3727 - 49795, n=245)
23371 Points ∼64% -36%
JetStream 1.1 - Total Score
Lenovo ThinkPad X1 Carbon 2019-20QE000VGE
Intel Core i7-8665U (Edge 44.18362.1.0)
260.5 Points ∼100% +8%
Average Intel Core i7-8665U
  (242 - 290, n=4)
259 Points ∼99% +7%
HP EliteBook 840 G5-3JX61EA
Intel Core i7-8550U (Edge 42)
244.03 Points ∼94% +1%
Dell Latitude 7400-8N6DH
Intel Core i7-8665U (Edge 44)
241.66 Points ∼93%
Toshiba Tecra X40-E-10W
Intel Core i5-8250U (Edge 42)
218.28 Points ∼84% -10%
Dell Latitude 7490
Intel Core i5-8350U (Microsoft Edge 42.17134.1.0)
217.64 Points ∼84% -10%
Lenovo ThinkPad T495s-20QKS01E00
AMD Ryzen 7 PRO 3700U (Edge 44.18362.1.0)
203.5 Points ∼78% -16%
HP EliteBook 745 G5 3UN74EA
AMD Ryzen 7 2700U (Edge)
179.94 Points ∼69% -26%
Average of class Office
  (36.7 - 290, n=249)
178 Points ∼68% -26%

* ... smaller is better

System Performance

The system works fast and smoothly. We have not encountered any problems. The device has enough computing power for office and Internet applications. The results in the PCMark benchmarks are also good. A slight increase in overall performance would be possible by activating the dual-channel mode. This would require a second memory module to be installed in the computer.

Two memory slots are available
Two memory slots are available
PCMark 8 Home Score Accelerated v2
3547 points
PCMark 8 Creative Score Accelerated v2
3715 points
PCMark 8 Work Score Accelerated v2
5195 points
Help
PCMark 10
Digital Content Creation
Lenovo ThinkPad T495s-20QKS01E00
Vega 10, PRO 3700U, Samsung PM981a MZVLB1T0HBLR
3407 Points ∼100% +11%
Lenovo ThinkPad T490s-20NYS02A00
UHD Graphics 620, 8265U, Intel SSD Pro 7600p SSDPEKKF512G8L
3210 Points ∼94% +4%
Lenovo ThinkPad X1 Carbon 2019-20QE000VGE
UHD Graphics 620, 8665U, WDC PC SN720 SDAQNTW-512G
3111 Points ∼91% +1%
Dell Latitude 7400-8N6DH
UHD Graphics 620, 8665U, Samsung SSD PM981 MZVLB512HAJQ
3080 Points ∼90%
Average Intel Core i7-8665U, Intel UHD Graphics 620
  (2847 - 3506, n=6)
3073 Points ∼90% 0%
HP EliteBook 840 G5-3JX61EA
UHD Graphics 620, 8550U, Toshiba KXG50ZNV1T02
2954 Points ∼87% -4%
Dell Latitude 7490
UHD Graphics 620, 8350U, Toshiba KSG60ZMV256G
2911 Points ∼85% -5%
Dell Latitude 7400 2-in-1
UHD Graphics 620, 8665U, Toshiba XG6 KXG60ZNV512G
2859 Points ∼84% -7%
Toshiba Tecra X40-E-10W
UHD Graphics 620, 8250U, Samsung PM961 MZVLW256HEHP
2788 Points ∼82% -9%
HP EliteBook 745 G5 3UN74EA
Vega 10, 2700U, Toshiba XG5 KXG50ZNV256G
2772 Points ∼81% -10%
Average of class Office
  (320 - 5520, n=155)
2673 Points ∼78% -13%
Productivity
Dell Latitude 7400-8N6DH
UHD Graphics 620, 8665U, Samsung SSD PM981 MZVLB512HAJQ
7100 Points ∼100%
Dell Latitude 7400 2-in-1
UHD Graphics 620, 8665U, Toshiba XG6 KXG60ZNV512G
7077 Points ∼100% 0%
Average Intel Core i7-8665U, Intel UHD Graphics 620
  (6506 - 7281, n=6)
6988 Points ∼98% -2%
Lenovo ThinkPad X1 Carbon 2019-20QE000VGE
UHD Graphics 620, 8665U, WDC PC SN720 SDAQNTW-512G
6870 Points ∼97% -3%
HP EliteBook 840 G5-3JX61EA
UHD Graphics 620, 8550U, Toshiba KXG50ZNV1T02
6651 Points ∼94% -6%
Lenovo ThinkPad T490s-20NYS02A00
UHD Graphics 620, 8265U, Intel SSD Pro 7600p SSDPEKKF512G8L
6441 Points ∼91% -9%
Toshiba Tecra X40-E-10W
UHD Graphics 620, 8250U, Samsung PM961 MZVLW256HEHP
5927 Points ∼83% -17%
Dell Latitude 7490
UHD Graphics 620, 8350U, Toshiba KSG60ZMV256G
5721 Points ∼81% -19%
Lenovo ThinkPad T495s-20QKS01E00
Vega 10, PRO 3700U, Samsung PM981a MZVLB1T0HBLR
5670 Points ∼80% -20%
Average of class Office
  (1266 - 7964, n=155)
5488 Points ∼77% -23%
HP EliteBook 745 G5 3UN74EA
Vega 10, 2700U, Toshiba XG5 KXG50ZNV256G
3408 Points ∼48% -52%
Essentials
Dell Latitude 7400 2-in-1
UHD Graphics 620, 8665U, Toshiba XG6 KXG60ZNV512G
8980 Points ∼100% +5%
Average Intel Core i7-8665U, Intel UHD Graphics 620
  (8199 - 9790, n=6)
8872 Points ∼99% +4%
Dell Latitude 7400-8N6DH
UHD Graphics 620, 8665U, Samsung SSD PM981 MZVLB512HAJQ
8519 Points ∼95%
Lenovo ThinkPad T490s-20NYS02A00
UHD Graphics 620, 8265U, Intel SSD Pro 7600p SSDPEKKF512G8L
8361 Points ∼93% -2%
HP EliteBook 840 G5-3JX61EA
UHD Graphics 620, 8550U, Toshiba KXG50ZNV1T02
8236 Points ∼92% -3%
Lenovo ThinkPad X1 Carbon 2019-20QE000VGE
UHD Graphics 620, 8665U, WDC PC SN720 SDAQNTW-512G
8199 Points ∼91% -4%
Toshiba Tecra X40-E-10W
UHD Graphics 620, 8250U, Samsung PM961 MZVLW256HEHP
7504 Points ∼84% -12%
Lenovo ThinkPad T495s-20QKS01E00
Vega 10, PRO 3700U, Samsung PM981a MZVLB1T0HBLR
7480 Points ∼83% -12%
Dell Latitude 7490
UHD Graphics 620, 8350U, Toshiba KSG60ZMV256G
7376 Points ∼82% -13%
Average of class Office
  (2683 - 9790, n=155)
6984 Points ∼78% -18%
HP EliteBook 745 G5 3UN74EA
Vega 10, 2700U, Toshiba XG5 KXG50ZNV256G
5732 Points ∼64% -33%
Score
Average Intel Core i7-8665U, Intel UHD Graphics 620
  (3847 - 4515, n=6)
4122 Points ∼100% +1%
Dell Latitude 7400-8N6DH
UHD Graphics 620, 8665U, Samsung SSD PM981 MZVLB512HAJQ
4094 Points ∼99%
Dell Latitude 7400 2-in-1
UHD Graphics 620, 8665U, Toshiba XG6 KXG60ZNV512G
4060 Points ∼98% -1%
Lenovo ThinkPad X1 Carbon 2019-20QE000VGE
UHD Graphics 620, 8665U, WDC PC SN720 SDAQNTW-512G
4005 Points ∼97% -2%
Lenovo ThinkPad T490s-20NYS02A00
UHD Graphics 620, 8265U, Intel SSD Pro 7600p SSDPEKKF512G8L
3985 Points ∼97% -3%
HP EliteBook 840 G5-3JX61EA
UHD Graphics 620, 8550U, Toshiba KXG50ZNV1T02
3906 Points ∼95% -5%
Lenovo ThinkPad T495s-20QKS01E00
Vega 10, PRO 3700U, Samsung PM981a MZVLB1T0HBLR
3762 Points ∼91% -8%
Toshiba Tecra X40-E-10W
UHD Graphics 620, 8250U, Samsung PM961 MZVLW256HEHP
3574 Points ∼87% -13%
Dell Latitude 7490
UHD Graphics 620, 8350U, Toshiba KSG60ZMV256G
3564 Points ∼86% -13%
Average of class Office
  (803 - 5009, n=156)
3282 Points ∼80% -20%
HP EliteBook 745 G5 3UN74EA
Vega 10, 2700U, Toshiba XG5 KXG50ZNV256G
2712 Points ∼66% -34%
PCMark 8
Work Score Accelerated v2
Dell Latitude 7400-8N6DH
UHD Graphics 620, 8665U, Samsung SSD PM981 MZVLB512HAJQ
5195 Points ∼100%
Lenovo ThinkPad T495s-20QKS01E00
Vega 10, PRO 3700U, Samsung PM981a MZVLB1T0HBLR
5077 Points ∼98% -2%
HP EliteBook 840 G5-3JX61EA
UHD Graphics 620, 8550U, Toshiba KXG50ZNV1T02
5004 Points ∼96% -4%
Average Intel Core i7-8665U, Intel UHD Graphics 620
  (4696 - 5195, n=4)
4932 Points ∼95% -5%
Lenovo ThinkPad T490s-20NYS02A00
UHD Graphics 620, 8265U, Intel SSD Pro 7600p SSDPEKKF512G8L
4927 Points ∼95% -5%
Dell Latitude 7490
UHD Graphics 620, 8350U, Toshiba KSG60ZMV256G
4906 Points ∼94% -6%
Dell Latitude 7400 2-in-1
UHD Graphics 620, 8665U, Toshiba XG6 KXG60ZNV512G
4743 Points ∼91% -9%
Toshiba Tecra X40-E-10W
UHD Graphics 620, 8250U, Samsung PM961 MZVLW256HEHP
4706 Points ∼91% -9%
Lenovo ThinkPad X1 Carbon 2019-20QE000VGE
UHD Graphics 620, 8665U, WDC PC SN720 SDAQNTW-512G
4696 Points ∼90% -10%
HP EliteBook 745 G5 3UN74EA
Vega 10, 2700U, Toshiba XG5 KXG50ZNV256G
4403 Points ∼85% -15%
Average of class Office
  (1226 - 5428, n=351)
4026 Points ∼77% -23%
Home Score Accelerated v2
Lenovo ThinkPad T490s-20NYS02A00
UHD Graphics 620, 8265U, Intel SSD Pro 7600p SSDPEKKF512G8L
4244 Points ∼100% +20%
Lenovo ThinkPad T495s-20QKS01E00
Vega 10, PRO 3700U, Samsung PM981a MZVLB1T0HBLR
4161 Points ∼98% +17%
HP EliteBook 840 G5-3JX61EA
UHD Graphics 620, 8550U, Toshiba KXG50ZNV1T02
3966 Points ∼93% +12%
Lenovo ThinkPad X1 Carbon 2019-20QE000VGE
UHD Graphics 620, 8665U, WDC PC SN720 SDAQNTW-512G
3823 Points ∼90% +8%
Average Intel Core i7-8665U, Intel UHD Graphics 620
  (3547 - 4211, n=5)
3818 Points ∼90% +8%
Dell Latitude 7490
UHD Graphics 620, 8350U, Toshiba KSG60ZMV256G
3723 Points ∼88% +5%
Dell Latitude 7400 2-in-1
UHD Graphics 620, 8665U, Toshiba XG6 KXG60ZNV512G
3550 Points ∼84% 0%
Dell Latitude 7400-8N6DH
UHD Graphics 620, 8665U, Samsung SSD PM981 MZVLB512HAJQ
3547 Points ∼84%
Toshiba Tecra X40-E-10W
UHD Graphics 620, 8250U, Samsung PM961 MZVLW256HEHP
3516 Points ∼83% -1%
HP EliteBook 745 G5 3UN74EA
Vega 10, 2700U, Toshiba XG5 KXG50ZNV256G
3155 Points ∼74% -11%
Average of class Office
  (1169 - 4770, n=411)
3059 Points ∼72% -14%

Storage Devices

Dell delivers the Latitude with an NVMe SSD from Samsung. This M.2-2280 model has a total capacity of 512 GB. Of this, about 441 GB is available at delivery. The remaining space is distributed between the Windows installation and the recovery partition. The transfer rates are very good. NVMe SSDs achieve significantly higher transfer speeds than SATA III models because they are connected via PCI Express.

An SSD serves as a system drive
An SSD serves as a system drive
Samsung SSD PM981 MZVLB512HAJQ
Sequential Read: 2445 MB/s
Sequential Write: 1876 MB/s
512K Read: 1608 MB/s
512K Write: 1450 MB/s
4K Read: 60.04 MB/s
4K Write: 120.7 MB/s
4K QD32 Read: 260.2 MB/s
4K QD32 Write: 322.9 MB/s
Dell Latitude 7400-8N6DH
Samsung SSD PM981 MZVLB512HAJQ
Lenovo ThinkPad X1 Carbon 2019-20QE000VGE
WDC PC SN720 SDAQNTW-512G
HP EliteBook 745 G5 3UN74EA
Toshiba XG5 KXG50ZNV256G
HP EliteBook 840 G5-3JX61EA
Toshiba KXG50ZNV1T02
Toshiba Tecra X40-E-10W
Samsung PM961 MZVLW256HEHP
Dell Latitude 7490
Toshiba KSG60ZMV256G
Lenovo ThinkPad T490s-20NYS02A00
Intel SSD Pro 7600p SSDPEKKF512G8L
Average Samsung SSD PM981 MZVLB512HAJQ
 
CrystalDiskMark 5.2 / 6
26%
-32%
-20%
-23%
-60%
-9%
-0%
Write 4K
118.6
196.91
66%
119.5
1%
96.09
-19%
100.1
-16%
79.41
-33%
122.03
3%
124 (90.4 - 174, n=53)
5%
Read 4K
44.68
51.33
15%
31.9
-29%
31.12
-30%
40.03
-10%
27.37
-39%
45.56
2%
43.3 (28 - 61.3, n=52)
-3%
Write Seq
1866
1714.6
-8%
351.1
-81%
919.3
-51%
1259
-33%
343.9
-82%
1497.34
-20%
1558 (112 - 2714, n=52)
-17%
Read Seq
2173
2464.05
13%
1665
-23%
2089
-4%
1296
-40%
472.7
-78%
2385.23
10%
1695 (501 - 2665, n=52)
-22%
Write 4K Q32T1
330.9
429.09
30%
268.4
-19%
425.6
29%
228.1
-31%
206
-38%
240.94
-27%
410 (198 - 1707, n=53)
24%
Read 4K Q32T1
343.1
542.46
58%
333.1
-3%
275.3
-20%
292.9
-15%
188.3
-45%
338.03
-1%
411 (230 - 1015, n=53)
20%
Write Seq Q32T1
1927
2520.8
31%
351.8
-82%
958.3
-50%
1286
-33%
343.3
-82%
1528.4
-21%
1983 (1714 - 2994, n=53)
3%
Read Seq Q32T1
3528
3481.3
-1%
2705
-23%
3118
-12%
3411
-3%
532.6
-85%
2915
-17%
3058 (1772 - 3562, n=53)
-13%

GPU Performance

The laptop does not offer a dedicated GPU. The graphics output is handled by Intel's UHD Graphics 620 graphics core. The GPU supports DirectX 12 and achieves working speeds of up to 1150 MHz. The results in the 3DMark benchmarks are at levels normal for this GPU. The graphics performance remains constant both in AC and battery mode.

An increase in performance would be achieved by activating the dual-channel mode (= installation of a memory module). We also ran some benchmarks while the dual-channel mode was active and added the results to the following table.

The built-in GPU decoder can relieve the processor when playing videos. This includes all common formats such as H.264 and HEVC/H.265. Thus, the use of streaming services is not a problem.

3DMark 11 (single-channel mode)
3DMark 11 (single-channel mode)
3DMark 11 (dual-channel mode)
3DMark 11 (dual-channel mode)
3DMark 06 Standard
11053 points
3DMark 11 Performance
1979 points
3DMark Ice Storm Standard Score
61551 points
3DMark Cloud Gate Standard Score
8736 points
3DMark Fire Strike Score
1075 points
3DMark Time Spy Score
448 points
Help
3DMark 11 - 1280x720 Performance GPU
Lenovo ThinkPad T495s-20QKS01E00
AMD Radeon RX Vega 10, AMD Ryzen 7 PRO 3700U
3781 Points ∼100% +110%
HP EliteBook 745 G5 3UN74EA
AMD Radeon RX Vega 10, AMD Ryzen 7 2700U
2885 Points ∼76% +60%
Lenovo ThinkPad X1 Carbon 2019-20QE000VGE
Intel UHD Graphics 620, Intel Core i7-8665U
1983 Points ∼52% +10%
Dell Latitude 7400-8N6DH
Intel UHD Graphics 620, Intel Core i7-8665U (Dual-Channel)
1980 Points ∼52% +10%
HP EliteBook 840 G5-3JX61EA
Intel UHD Graphics 620, Intel Core i7-8550U
1849 Points ∼49% +2%
Lenovo ThinkPad T490s-20NYS02A00
Intel UHD Graphics 620, Intel Core i5-8265U
1839 Points ∼49% +2%
Dell Latitude 7400-8N6DH
Intel UHD Graphics 620, Intel Core i7-8665U
1804 Points ∼48%
Dell Latitude 7400 2-in-1
Intel UHD Graphics 620, Intel Core i7-8665U
1778 Points ∼47% -1%
Average Intel UHD Graphics 620
  (1235 - 2006, n=172)
1716 Points ∼45% -5%
Toshiba Tecra X40-E-10W
Intel UHD Graphics 620, Intel Core i5-8250U
1699 Points ∼45% -6%
Dell Latitude 7490
Intel UHD Graphics 620, Intel Core i5-8350U
1648 Points ∼44% -9%
Average of class Office
  (185 - 11542, n=661)
1335 Points ∼35% -26%
3DMark
Night Raid Graphics Score
Dell Latitude 7400-8N6DH
Intel UHD Graphics 620, Intel Core i7-8665U (Dual-Channel)
6093 Points ∼100% +21%
Average of class Office
  (1849 - 9887, n=12)
5476 Points ∼90% +9%
Average Intel UHD Graphics 620
  (4284 - 6093, n=10)
5069 Points ∼83% +1%
Dell Latitude 7400-8N6DH
Intel UHD Graphics 620, Intel Core i7-8665U
5029 Points ∼83%
2560x1440 Time Spy Graphics
Lenovo ThinkPad T495s-20QKS01E00
AMD Radeon RX Vega 10, AMD Ryzen 7 PRO 3700U
737 Points ∼100% +88%
Average of class Office
  (76 - 3028, n=55)
527 Points ∼72% +35%
Lenovo ThinkPad X1 Carbon 2019-20QE000VGE
Intel UHD Graphics 620, Intel Core i7-8665U
431 Points ∼58% +10%
Dell Latitude 7400-8N6DH
Intel UHD Graphics 620, Intel Core i7-8665U (Dual-Channel)
401 Points ∼54% +3%
Dell Latitude 7400-8N6DH
Intel UHD Graphics 620, Intel Core i7-8665U
391 Points ∼53%
Average Intel UHD Graphics 620
  (299 - 431, n=33)
358 Points ∼49% -8%
1920x1080 Fire Strike Graphics
Lenovo ThinkPad T495s-20QKS01E00
AMD Radeon RX Vega 10, AMD Ryzen 7 PRO 3700U
2385 Points ∼100% +103%
HP EliteBook 745 G5 3UN74EA
AMD Radeon RX Vega 10, AMD Ryzen 7 2700U
1738 Points ∼73% +48%
Lenovo ThinkPad X1 Carbon 2019-20QE000VGE
Intel UHD Graphics 620, Intel Core i7-8665U
1357 Points ∼57% +16%
HP EliteBook 840 G5-3JX61EA
Intel UHD Graphics 620, Intel Core i7-8550U
1336 Points ∼56% +14%
Lenovo ThinkPad T490s-20NYS02A00
Intel UHD Graphics 620, Intel Core i5-8265U
1336 Points ∼56% +14%
Dell Latitude 7400-8N6DH
Intel UHD Graphics 620, Intel Core i7-8665U (Dual-Channel)
1302 Points ∼55% +11%
Dell Latitude 7400 2-in-1
Intel UHD Graphics 620, Intel Core i7-8665U
1245 Points ∼52% +6%
Dell Latitude 7400-8N6DH
Intel UHD Graphics 620, Intel Core i7-8665U
1173 Points ∼49%
Average Intel UHD Graphics 620
  (557 - 1401, n=141)
1127 Points ∼47% -4%
Toshiba Tecra X40-E-10W
Intel UHD Graphics 620, Intel Core i5-8250U
1059 Points ∼44% -10%
Average of class Office
  (138 - 7774, n=480)
1028 Points ∼43% -12%
Dell Latitude 7490
Intel UHD Graphics 620, Intel Core i5-8350U
1001 Points ∼42% -15%
1280x720 Cloud Gate Standard Graphics
Lenovo ThinkPad T495s-20QKS01E00
AMD Radeon RX Vega 10, AMD Ryzen 7 PRO 3700U
16495 Points ∼100% +76%
Lenovo ThinkPad T490s-20NYS02A00
Intel UHD Graphics 620, Intel Core i5-8265U
10881 Points ∼66% +16%
Dell Latitude 7400-8N6DH
Intel UHD Graphics 620, Intel Core i7-8665U (Dual-Channel)
10744 Points ∼65% +15%
Lenovo ThinkPad X1 Carbon 2019-20QE000VGE
Intel UHD Graphics 620, Intel Core i7-8665U
10656 Points ∼65% +14%
HP EliteBook 745 G5 3UN74EA
AMD Radeon RX Vega 10, AMD Ryzen 7 2700U
10604 Points ∼64% +13%
HP EliteBook 840 G5-3JX61EA
Intel UHD Graphics 620, Intel Core i7-8550U
10331 Points ∼63% +10%
Dell Latitude 7400 2-in-1
Intel UHD Graphics 620, Intel Core i7-8665U
10165 Points ∼62% +9%
Dell Latitude 7400-8N6DH
Intel UHD Graphics 620, Intel Core i7-8665U
9354 Points ∼57%
Average Intel UHD Graphics 620
  (6910 - 11436, n=159)
9136 Points ∼55% -2%
Toshiba Tecra X40-E-10W
Intel UHD Graphics 620, Intel Core i5-8250U
8226 Points ∼50% -12%
Dell Latitude 7490
Intel UHD Graphics 620, Intel Core i5-8350U
7943 Points ∼48% -15%
Average of class Office
  (1208 - 27117, n=526)
7059 Points ∼43% -25%

Gaming Performance

The Latitude 7400 is not a gaming laptop. Nonetheless, the Dell computer allows some of the games in our database to be played - at low resolution and low quality settings. This includes titles that do not have high hardware requirements, such as "Dota 2 Reborn", "League of Legends" and "Tomb Raider". Activating the dual-channel mode (= installation of a second memory module) would increase the refresh rates.

low med. high ultra
Tomb Raider (2013) 87.8 44.3 27 12.5 fps
BioShock Infinite (2013) 60.9 34.3 26.7 8.5 fps
The Witcher 3 (2015) 15.8 9.3 5.4 3 fps
Dota 2 Reborn (2015) 73 42.9 19.5 17.3 fps
X-Plane 11.11 (2018) 23.1 15 13.4 fps
BioShock Infinite - 1280x720 Very Low Preset
Lenovo ThinkPad T495s-20QKS01E00
AMD Ryzen 7 PRO 3700U, AMD Radeon RX Vega 10
106.4 fps ∼100% +75%
HP EliteBook 745 G5 3UN74EA
AMD Ryzen 7 2700U, AMD Radeon RX Vega 10
84.7 fps ∼80% +39%
Dell Latitude 7400-8N6DH
Intel Core i7-8665U, Intel UHD Graphics 620 (Dual-Channel)
82 fps ∼77% +35%
HP EliteBook 840 G5-3JX61EA
Intel Core i7-8550U, Intel UHD Graphics 620
80.3 fps ∼75% +32%
Dell Latitude 7400-8N6DH
Intel Core i7-8665U, Intel UHD Graphics 620
60.9 fps ∼57%
Average Intel UHD Graphics 620
  (18.3 - 90.2, n=159)
60.5 fps ∼57% -1%
Lenovo ThinkPad T490s-20NYS02A00
Intel Core i5-8265U, Intel UHD Graphics 620
58.7 fps ∼55% -4%
Lenovo ThinkPad X1 Carbon 2019-20QE000VGE
Intel Core i7-8665U, Intel UHD Graphics 620
57.1 fps ∼54% -6%
Average of class Office
  (12.2 - 296, n=375)
56.9 fps ∼53% -7%
Dell Latitude 7400 2-in-1
Intel Core i7-8665U, Intel UHD Graphics 620
56 fps ∼53% -8%
Dell Latitude 7490
Intel Core i5-8350U, Intel UHD Graphics 620
52 fps ∼49% -15%
Toshiba Tecra X40-E-10W
Intel Core i5-8250U, Intel UHD Graphics 620
46.8 fps ∼44% -23%
Tomb Raider - 1024x768 Low Preset
Dell Latitude 7400-8N6DH
Intel Core i7-8665U, Intel UHD Graphics 620
87.8 fps ∼100%
Average Intel UHD Graphics 620
  (24.3 - 104, n=14)
86.5 fps ∼99% -1%
Average of class Office
  (11.8 - 183, n=228)
53.1 fps ∼60% -40%
Dota 2 Reborn - 1280x720 min (0/3) fastest
Lenovo ThinkPad T490s-20NYS02A00
Intel Core i5-8265U, Intel UHD Graphics 620
86 (min: 76.8) fps ∼100% +18%
Lenovo ThinkPad X1 Carbon 2019-20QE000VGE
Intel Core i7-8665U, Intel UHD Graphics 620
85 (min: 76) fps ∼99% +16%
Lenovo ThinkPad T495s-20QKS01E00
AMD Ryzen 7 PRO 3700U, AMD Radeon RX Vega 10
73 (min: 65.4) fps ∼85% 0%
Dell Latitude 7400-8N6DH
Intel Core i7-8665U, Intel UHD Graphics 620
73 (min: 62.2) fps ∼85%
Average Intel UHD Graphics 620
  (60.4 - 86, n=27)
71.5 fps ∼83% -2%
Average of class Office
  (21.3 - 131, n=52)
66.1 fps ∼77% -9%

Emissions - The Fan Makes a Whistling Noise

System Noise

The Latitude does not generate much noise over the entire load range. When the device is idle, the fan is often quiet and there is silence. Under full load the fan turns up a bit. During the stress test, we measured a sound pressure level of 36.9 dB (A) - a very good value. Unfortunately, the fan produces a high-pitched whistling noise.

Noise Level

Idle
28.6 / 28.6 / 29.1 dB(A)
Load
31.5 / 36.9 dB(A)
  red to green bar
 
 
30 dB
silent
40 dB(A)
audible
50 dB(A)
loud
 
min: dark, med: mid, max: light   Audix TM1, Arta (15 cm distance)   environment noise: 28.6 dB(A)
dB(A) 0102030405060708090Deep BassMiddle BassHigh BassLower RangeMidsHigher MidsLower HighsMid HighsUpper HighsSuper Highs2028.428.431.729.528.12525.927.125.623.425.93126.224.52627.528.440262526.324.8265026.123.923.622.124.36326.421.82321.723.38023.425.123.122.422.810026.523.322.321.830.812523.422.922.621.225.916025.22222.621.822.220023.821.521.121.823.325026.420.621.621.522.63152220.820.721.121.640021.320.519.719.821.350021.520.319.919.622.663020.919.918.818.422.680021.220.218.417.823.5100023.220.818.117.425.5125023.62117.516.826.6160024.621.316.91627.9200022.319.616.315.426.2250020.818.815.715.424.7315020.718.515.91524.7400022.220.315.615.126.2500024.81815.41525.1630017.515.915.414.922.4800015.915.415.314.818.41000015.515.215.414.717.612500151515.114.616.31600014.814.714.714.315.2SPL34.131.529.128.636.9N21.51.21.12.5median 22median 20.3median 17.5median 16.8median 23.3Delta2.61.82.632.1hearing rangehide median Fan NoiseDell Latitude 7400-8N6DH
Dell Latitude 7400-8N6DH
8665U, UHD Graphics 620
Dell Latitude 7490
8350U, UHD Graphics 620
Lenovo ThinkPad X1 Carbon 2019-20QE000VGE
8665U, UHD Graphics 620
HP EliteBook 745 G5 3UN74EA
2700U, Vega 10
HP EliteBook 840 G5-3JX61EA
8550U, UHD Graphics 620
Toshiba Tecra X40-E-10W
8250U, UHD Graphics 620
Lenovo ThinkPad T490s-20NYS02A00
8265U, UHD Graphics 620
Noise
0%
3%
-6%
-4%
-13%
-2%
off / environment *
28.6
28.2
1%
28.4
1%
30.5
-7%
30.3
-6%
30.5
-7%
29.4
-3%
Idle Minimum *
28.6
28.2
1%
28.4
1%
30.5
-7%
30.3
-6%
30.5
-7%
29.4
-3%
Idle Average *
28.6
28.2
1%
28.4
1%
30.5
-7%
30.3
-6%
30.5
-7%
29.4
-3%
Idle Maximum *
29.1
28.7
1%
28.6
2%
30.5
-5%
30.3
-4%
31.2
-7%
30.9
-6%
Load Average *
31.5
29.9
5%
31.5
-0%
36
-14%
33.8
-7%
43.9
-39%
33.3
-6%
Load Maximum *
36.9
40.2
-9%
33.1
10%
36
2%
33.8
8%
40.1
-9%
33.3
10%

* ... smaller is better

Temperature

The Latitude in the stress test
The Latitude in the stress test

Our stress test (Prime95 and FurMark running for at least one hour) is managed by the Dell laptop in the same way in both AC and battery mode. For a few seconds, the processor operates at speeds between 2 and 3 GHz. It then throttles down to 1.1-1.2 GHz. The clock frequency remains at this level for the rest of the test. The operating speed of the graphics core drops from initially 1150 MHz to 850-950 MHz. The stress test represents an extreme scenario that does not occur in everyday life. We use it to verify that the system is stable even at full capacity.

During the stress test we register temperatures beyond 40 °C (104 °F) at several measuring points. We would have expected quite lower values here since the CPU works at very low speeds. At the same time, the fan does not run particularly fast. Dell seems to have preferred a slow running fan to a cooler case. When idle, the values are in the green area.

Max. Load
 41.2 °C
106 F
42.4 °C
108 F
42.1 °C
108 F
 
 38.5 °C
101 F
38.7 °C
102 F
36 °C
97 F
 
 30.7 °C
87 F
29.7 °C
85 F
29.6 °C
85 F
 
Maximum: 42.4 °C = 108 F
Average: 36.5 °C = 98 F
34.4 °C
94 F
47.1 °C
117 F
43.1 °C
110 F
35.2 °C
95 F
41.4 °C
107 F
39.3 °C
103 F
29.5 °C
85 F
35 °C
95 F
32.4 °C
90 F
Maximum: 47.1 °C = 117 F
Average: 37.5 °C = 100 F
Power Supply (max.)  38.3 °C = 101 F | Room Temperature 20.5 °C = 69 F | Voltcraft IR-900
(±) The average temperature for the upper side under maximal load is 36.5 °C / 98 F, compared to the average of 29.5 °C / 85 F for the devices in the class Office.
(±) The maximum temperature on the upper side is 42.4 °C / 108 F, compared to the average of 34 °C / 93 F, ranging from 21.2 to 62.5 °C for the class Office.
(-) The bottom heats up to a maximum of 47.1 °C / 117 F, compared to the average of 36.5 °C / 98 F
(+) In idle usage, the average temperature for the upper side is 23.9 °C / 75 F, compared to the device average of 29.5 °C / 85 F.
(+) The palmrests and touchpad are cooler than skin temperature with a maximum of 30.7 °C / 87.3 F and are therefore cool to the touch.
(-) The average temperature of the palmrest area of similar devices was 28.1 °C / 82.6 F (-2.6 °C / -4.7 F).
Heat map of the top of the device (stress test)
Heat map of the top of the device (stress test)
Heat map of the bottom of the device (stress test)
Heat map of the bottom of the device (stress test)
Dell Latitude 7400-8N6DH
8665U, UHD Graphics 620
Dell Latitude 7490
8350U, UHD Graphics 620
Lenovo ThinkPad X1 Carbon 2019-20QE000VGE
8665U, UHD Graphics 620
HP EliteBook 745 G5 3UN74EA
2700U, Vega 10
HP EliteBook 840 G5-3JX61EA
8550U, UHD Graphics 620
Toshiba Tecra X40-E-10W
8250U, UHD Graphics 620
Lenovo ThinkPad T490s-20NYS02A00
8265U, UHD Graphics 620
Heat
-23%
-2%
-2%
18%
-6%
0%
Maximum Upper Side *
42.4
45.2
-7%
47.9
-13%
38.4
9%
33.4
21%
44
-4%
43.3
-2%
Maximum Bottom *
47.1
51.6
-10%
45.9
3%
35.8
24%
32.7
31%
47.2
-0%
45.1
4%
Idle Upper Side *
24.5
31.8
-30%
24.6
-0%
29.8
-22%
22.2
9%
27.3
-11%
25
-2%
Idle Bottom *
25.2
36
-43%
24.4
3%
29.7
-18%
22.3
12%
27.8
-10%
25
1%

* ... smaller is better

Speakers

The Latitude stereo speakers are situated at the front edge of the device base. They produce a decent sound, which, however, lacks bass. For a better sound experience, one should resort to headphones or external speakers.

dB(A) 0102030405060708090Deep BassMiddle BassHigh BassLower RangeMidsHigher MidsLower HighsMid HighsUpper HighsSuper Highs2029.5352523.428.33127.528.24024.827.15022.125.66321.726.68022.435.710021.840.312521.244.316021.848.120021.847.425021.543.631521.148.240019.853.750019.657.663018.462.980017.865.7100017.461.3125016.861.316001662.9200015.461.3250015.465.631501564.1400015.16750001571.4630014.970.7800014.868.41000014.761.81250014.666.61600014.363.9SPL28.678.3N1.141.1median 16.8median 61.8Delta36.727.529.429.728.624.127.824.728.222.629.722.433.422.137.42242.720.546.120.547.920.150.220.953.419.85619.958.618.96218.863.817.368.617.168.116.868.916.267.815.563.615.462.915.262.715.154.11562.214.965.114.760.514.657.714.454.514.449.928.476.81.139.1median 16.8median 60.52.14.9hearing rangehide median Pink NoiseDell Latitude 7400-8N6DHLenovo ThinkPad X1 Carbon 2019-20QE000VGE
Frequency diagram (checkboxes can be checked and unchecked to compare devices)
Dell Latitude 7400-8N6DH audio analysis

(±) | speaker loudness is average but good (78.3 dB)
Bass 100 - 315 Hz
(-) | nearly no bass - on average 16.5% lower than median
(±) | linearity of bass is average (8% delta to prev. frequency)
Mids 400 - 2000 Hz
(+) | balanced mids - only 2.5% away from median
(±) | linearity of mids is average (7% delta to prev. frequency)
Highs 2 - 16 kHz
(±) | higher highs - on average 5.2% higher than median
(±) | linearity of highs is average (7.2% delta to prev. frequency)
Overall 100 - 16.000 Hz
(±) | linearity of overall sound is average (15.7% difference to median)
Compared to same class
» 16% of all tested devices in this class were better, 4% similar, 80% worse
» The best had a delta of 8%, average was 21%, worst was 51%
Compared to all devices tested
» 18% of all tested devices were better, 4% similar, 78% worse
» The best had a delta of 3%, average was 21%, worst was 53%

Lenovo ThinkPad X1 Carbon 2019-20QE000VGE audio analysis

(±) | speaker loudness is average but good (76.8 dB)
Bass 100 - 315 Hz
(±) | reduced bass - on average 11.2% lower than median
(±) | linearity of bass is average (7.1% delta to prev. frequency)
Mids 400 - 2000 Hz
(±) | higher mids - on average 5.1% higher than median
(+) | mids are linear (5.4% delta to prev. frequency)
Highs 2 - 16 kHz
(+) | balanced highs - only 2.9% away from median
(±) | linearity of highs is average (9.1% delta to prev. frequency)
Overall 100 - 16.000 Hz
(+) | overall sound is linear (14.4% difference to median)
Compared to same class
» 11% of all tested devices in this class were better, 4% similar, 86% worse
» The best had a delta of 8%, average was 21%, worst was 51%
Compared to all devices tested
» 13% of all tested devices were better, 3% similar, 84% worse
» The best had a delta of 3%, average was 21%, worst was 53%

Power Management - The 7400 Is Quite Enduring

Power Consumption

The Latitude does not surprise in terms of energy demand. At idle, we measured a maximum power consumption of 8.2 watts. When the key illumination is off, the value is 6.84 watts. During the stress test (Prime95 and FurMark run for at least one hour), the demand increases up to 69.7 watts for a few seconds, then drops to 42 watts and later to 30 watts.

The rated power of the included USB C power adapter is 65 watts. The laptop also has a port for a standard Dell power adapter. Thus, an already existing one could be used.

Power Consumption
Off / Standbydarklight 0.28 / 0.91 Watt
Idledarkmidlight 3.9 / 6.1 / 8.2 Watt
Load midlight 41 / 69.7 Watt
 color bar
Key: min: dark, med: mid, max: light        Metrahit Energy
Dell Latitude 7400-8N6DH
8665U, UHD Graphics 620
Dell Latitude 7490
8350U, UHD Graphics 620
Lenovo ThinkPad X1 Carbon 2019-20QE000VGE
8665U, UHD Graphics 620
HP EliteBook 745 G5 3UN74EA
2700U, Vega 10
HP EliteBook 840 G5-3JX61EA
8550U, UHD Graphics 620
Toshiba Tecra X40-E-10W
8250U, UHD Graphics 620
Lenovo ThinkPad T490s-20NYS02A00
8265U, UHD Graphics 620
Power Consumption
30%
3%
-6%
-1%
4%
10%
Idle Minimum *
3.9
2
49%
3
23%
4.9
-26%
3.8
3%
4.5
-15%
2.62
33%
Idle Average *
6.1
4.7
23%
6.3
-3%
8.1
-33%
8.3
-36%
8.2
-34%
5.16
15%
Idle Maximum *
8.2
5.7
30%
8.9
-9%
10.6
-29%
10.7
-30%
9.3
-13%
8.7
-6%
Load Average *
41
38.4
6%
40.8
-0%
32.2
21%
35.5
13%
30.4
26%
40
2%
Load Maximum *
69.7
38.9
44%
67.5
3%
42.3
39%
37
47%
30.4
56%
64
8%

* ... smaller is better

Battery Life

The Dell computer achieves a runtime of 11 hours and 36 minutes in our practical WLAN test. We use a script to simulate the loading of websites. The "Balanced" profile is active and the display brightness is set at approximately 150 cd/m². At maximum display brightness, the battery is empty after 10 hours and 9 minutes. Our video test is accomplished by the 14-inch machine after 14 hours and 22 minutes. Here we run the short film "Big Buck Bunny" (H.264 encoding, 1920x1080 pixels) in a continuous loop. The wireless module is disabled and the display brightness is lowered to 150 cd/m².

The battery has a capacity of 60 Wh
The battery has a capacity of 60 Wh
Battery Runtime
NBC WiFi Websurfing Battery Test 1.3 (Edge 44)
11h 36min
NBC WiFi Websurfing Battery Test 1.3 max Brightness
10h 9min
Big Buck Bunny H.264 1080p
14h 22min
Load (maximum brightness)
2h 21min
Dell Latitude 7400-8N6DH
8665U, UHD Graphics 620, 60 Wh
Lenovo ThinkPad X1 Carbon 2019-20QE000VGE
8665U, UHD Graphics 620, 51 Wh
HP EliteBook 745 G5 3UN74EA
2700U, Vega 10, 50 Wh
HP EliteBook 840 G5-3JX61EA
8550U, UHD Graphics 620, 50 Wh
Toshiba Tecra X40-E-10W
8250U, UHD Graphics 620, 48 Wh
Dell Latitude 7490
8350U, UHD Graphics 620, 60 Wh
Dell Latitude 7400 2-in-1
8665U, UHD Graphics 620, 78 Wh
Lenovo ThinkPad X1 Carbon 2019-20QES01L00
8565U, UHD Graphics 620, 51 Wh
Lenovo ThinkPad T490s-20NYS02A00
8265U, UHD Graphics 620, 57 Wh
Lenovo ThinkPad T495s-20QKS01E00
PRO 3700U, Vega 10, 57 Wh
Average of class Office
 
Battery Runtime
-34%
-42%
-36%
-28%
-21%
5%
-28%
-15%
-8%
-39%
Reader / Idle
639
572 (101 - 1857, n=800)
H.264
862
586
-32%
426
-51%
688
-20%
834
-3%
750
-13%
437 (139 - 862, n=184)
-49%
WiFi v1.3
696
493
-29%
394
-43%
444
-36%
498
-28%
548
-21%
732
5%
562
-19%
607
-13%
675
-3%
417 (105 - 1104, n=356)
-40%
Load
141
83
-41%
95
-33%
76
-46%
99
-30%
101 (37 - 259, n=755)
-28%

Pros

+ IPS display
+ slim and stylish metal case
+ narrow bezel display
+ good system performance
+ excellent keyboard
+ long battery life
+ easy to maintain/upgrade
+ quiet operation