Notebookcheck

Dell Latitude 7390 (Core i7-8650U, Touchscreen) Laptop Review

Smarter business? One of the best business ultrabooks gets even more powerful with the adoption of an 8th-generation Core i7-8650U CPU and NVMe SSD—as well as an honest-to-goodness anti-glare touchscreen. But are these extra perks worth the cost premium? As always, we’ll investigate with relentless detail in our full review.

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Just a month ago, we posted an in-depth review of what is currently one of the top business ultrabooks on the market. The Dell Latitude 7390 fulfills all of the basic requirements of a successful office companion and then some, combining the attractive form factor and luxurious bells and whistles of a consumer device with the uncompromising sensibilities and practical philosophy of a business device. We praised its flawless workmanship, excellent design, comprehensive port selection, easy maintenance, terrific keyboard, quiet operation, impressive screen, and great battery life. Meanwhile, we regretted the absence of Thunderbolt 3 and NVMe SSD alongside several other relatively minor nitpicks, such as a slightly unreliable fingerprint sensor and the lack of a maintenance flap.

Today’s configuration is mostly comparable to last month’s with the exception of some notable upgrades. The first of these is a Core i7-8650U CPU, and it’s now paired with an NVMe SSD (which ought to provide a tangible boost to general system performance). Also intriguing is the addition of a touchscreen, which normally in Dell’s case translates to a glossy screen finish, but not anymore: the 7390’s anti-glare touchscreen is actually anti-glare. All these perks add up to a retail cost of $2,197, nearly $500 higher than the previous model. Is today’s setup worth the extra cash?

Dell Latitude 7390 (Latitude 7390 Series)
Graphics adapter
Intel UHD Graphics 620, Core: 300-1150 MHz, 22.20.16.4799
Memory
8192 MB 
, DDR4-2400
Display
13.3 inch 16:9, 1920 x 1080 pixel 166 PPI, yes; 10-point multi-touch, LGD059B, IPS, glossy: no
Mainboard
Intel Sunrise Point-LP
Storage
Samsung PM961 MZVLW256HEHP, 256 GB 
Soundcard
Realtek ALC256 @ Intel Sunrise Point-LP PCH - High Definition Audio Controller
Connections
2 USB 3.0 / 3.1 Gen1, 1 USB 3.1 Gen2, 1 Thunderbolt, 1 HDMI, 1 Kensington Lock, Audio Connections: 3.5 mm combo audio, Card Reader: microSD, 1 SmartCard, 1 Fingerprint Reader
Networking
Intel Ethernet Connection I219-LM (10/100/1000MBit), Intel Dual Band Wireless-AC 8265 (a/b/g/n/ac), Bluetooth 4.2
Size
height x width x depth (in mm): 16.5 x 305 x 208 ( = 0.65 x 12.01 x 8.19 in)
Battery
60 Wh Lithium-Polymer
Operating System
Microsoft Windows 10 Pro 64 Bit
Camera
Webcam: 720p
Primary Camera: 1 MPix
Additional features
Speakers: 2.0, bottom-mounted, Keyboard: Chiclet, Keyboard Light: yes, 36 Months Warranty
Weight
1.307 kg ( = 46.1 oz / 2.88 pounds), Power Supply: 300 g ( = 10.58 oz / 0.66 pounds)

 

Preliminary Notes

Very little has changed since our review of the Latitude 7390 last month, so for the initial sections regarding construction, connectivity, input devices, and so forth, please reference our in-depth comments in that review. However, there are a few minor things that have changed since our previous article.

For starters, our criticism regarding the lack of Thunderbolt no longer applies: today’s unit trades the USB Type-C/DisplayPort for a Thunderbolt 3 port. Secondly, removing the rear panel of the laptop does not void the warranty, so the lack of a maintenance flap is really more of a minor inconvenience. Next, the keyboard layout is different between the US and European models, and there is no difference in size whatsoever between it and the larger Latitude 7480 keyboard (that is to say, it’s full-sized). Finally, we did not experience the lower-quality sensation with the touchpad buttons on our review unit here, so it’s likely that this may have been an idiosyncrasy of the previous review unit (or perhaps a result of the parts lottery which so very often applies to nearly all laptop purchases).

SDCardreader Transfer Speed
average JPG Copy Test (av. of 3 runs)
Lenovo ThinkPad X1 Carbon 2018-20KGS03900
  (Toshiba Exceria Pro M501)
191.2 MB/s ∼100% +24%
Dell Latitude 7390
  (Toshiba Exceria Pro M501)
166 MB/s ∼87% +8%
Dell Latitude 7390
  (Toshiba Exceria Pro M501 UHS-II)
153.99 MB/s ∼81%
Dell Latitude 13 7380
  (Toshiba Exceria Pro SDXC 64 GB UHS-II)
76.59 MB/s ∼40% -50%
Asus ZenBook 13 UX331UN
  (Toshiba Exceria Pro M501 microSDXC 64GB)
69.7 MB/s ∼36% -55%
Average of class Office
  (16.5 - 191, n=203)
61.7 MB/s ∼32% -60%
maximum AS SSD Seq Read Test (1GB)
Lenovo ThinkPad X1 Carbon 2018-20KGS03900
  (Toshiba Exceria Pro M501)
223.9 MB/s ∼100% +6%
Dell Latitude 7390
  (Toshiba Exceria Pro M501 UHS-II)
211.06 MB/s ∼94%
Dell Latitude 7390
  (Toshiba Exceria Pro M501)
201.1 MB/s ∼90% -5%
Dell Latitude 13 7380
  (Toshiba Exceria Pro SDXC 64 GB UHS-II)
87.77 MB/s ∼39% -58%
Asus ZenBook 13 UX331UN
  (Toshiba Exceria Pro M501 microSDXC 64GB)
84.9 MB/s ∼38% -60%
Average of class Office
  (9.5 - 255, n=182)
79.6 MB/s ∼36% -62%

Display

The display panel has only changed slightly since last month’s model. Today’s unit still features a 13.3-inch 1920x1080 IPS matte display (166 PPI), and subjectively, it appears almost identical to that of the previous 7390 we reviewed. But there is one major difference: it’s also a touchscreen. Whereas in the past, Dell has labeled their reflection-diffusing touchscreens “anti-glare”, they are still most certainly glossy—but this screen is not. It is exactly the same in appearance to any other standard, non-touch, matte-finished panel, but it is in fact a touchscreen—an accomplishment which effectively dispels the biggest criticism with the touchscreens of yore. Lenovo has something similar in their X1 Carbon, but the Latitude’s implementation is even more subtle. The specific technology being employed here is called "Embedded Touch" anti-glare.

Subpixel array, Latitude 7390 anti-glare touch panel
Subpixel array, Latitude 7390 anti-glare touch panel
Very little backlight bleed
Very little backlight bleed
289.1
cd/m²
298
cd/m²
300.7
cd/m²
268.4
cd/m²
303.8
cd/m²
292.7
cd/m²
261.7
cd/m²
286.7
cd/m²
295.8
cd/m²
Distribution of brightness
X-Rite i1Pro Basic 2
Maximum: 303.8 cd/m² Average: 288.5 cd/m² Minimum: 13.16 cd/m²
Brightness Distribution: 86 %
Center on Battery: 303.8 cd/m²
Contrast: 980:1 (Black: 0.31 cd/m²)
ΔE Color 2.9 | 0.8-29.43 Ø6.3, calibrated: 1.72
ΔE Greyscale 3.7 | 0.64-98 Ø6.6
95% sRGB (Argyll) 63% AdobeRGB 1998 (Argyll)
Gamma: 2.118
Dell Latitude 7390
LGD059B, IPS, 13.3, 1920x1080
Dell Latitude 7390
AU Optronics AUO462D / B133HAN [DELL P/N:F7VDJ], IPS, 13.3, 1920x1080
Lenovo ThinkPad X1 Carbon 2018-20KGS03900
B140QAN02.0, IPS, 14, 2560x1440
HP Elitebook 1040 G4-2XU40UT
Chi Mei CMN14D7, IPS, 14, 1920x1080
Asus ZenBook 13 UX331UN
AU Optronics B133HAN04.9, IPS, 13.3, 1920x1080
Response Times
-25%
-37%
4%
1%
Response Time Grey 50% / Grey 80% *
36.8 (18, 18.8)
48.8 (24.8, 24)
-33%
59.2 (28.4, 30.8)
-61%
34.4 (16.4, 18)
7%
44 (22, 22)
-20%
Response Time Black / White *
30.4 (18.8, 11.6)
35.2 (21.2, 14)
-16%
34.4 (16.4, 18)
-13%
30 (11.2, 18.8)
1%
24 (13, 11)
21%
PWM Frequency
26040 (59)
Screen
-5%
35%
-1%
-3%
Brightness middle
303.8
329
8%
578
90%
295.9
-3%
329
8%
Brightness
289
316
9%
533
84%
287
-1%
306
6%
Brightness Distribution
86
92
7%
84
-2%
87
1%
86
0%
Black Level *
0.31
0.25
19%
0.38
-23%
0.23
26%
0.3
3%
Contrast
980
1316
34%
1521
55%
1287
31%
1097
12%
Colorchecker DeltaE2000 *
2.9
4.3
-48%
1.9
34%
2.83
2%
4.07
-40%
Colorchecker DeltaE2000 max. *
5.79
7.8
-35%
3.8
34%
7.34
-27%
7.05
-22%
Colorchecker DeltaE2000 calibrated *
1.72
2.5
-45%
0.8
53%
Greyscale DeltaE2000 *
3.7
3.6
3%
3
19%
5.2
-41%
2.76
25%
Gamma
2.118 113%
2.43 99%
2.14 112%
2.28 105%
2.56 94%
CCT
6323 103%
6928 94%
6377 102%
7056 92%
6915 94%
Color Space (Percent of AdobeRGB 1998)
63
59.1
-6%
88.8
41%
63
0%
56
-11%
Color Space (Percent of sRGB)
95
90.6
-5%
100
5%
97
2%
86
-9%
Total Average (Program / Settings)
-15% / -8%
-1% / 24%
2% / -0%
-1% / -2%

* ... smaller is better

Indeed, we didn’t measure a huge difference between the two panels: today’s Latitude 7390 posted an average brightness of 289, whereas last month’s managed 316 cd/m². Brightness distribution also remains good at 86%. Contrast sees a dip but is still well within reasonable ranges at 980:1 (spurred by a black level of 0.31 cd/m²).

Color coverage is reasonably good (slightly better than last month’s model, in fact) at 95% of sRGB and 63% of AdobeRGB, but this is of course still a very far cry from the Lenovo X1 Carbon’s 100% and 89%, respectively. The Elitebook 1040 G4 records nearly identical values, and the ASUS ZenBook 13 is just a bit behind the rest of the pack (at only 86% sRGB).

vs. sRGB
vs. sRGB
vs. AdobeRGB
vs. AdobeRGB
vs. Latitude 7380
vs. Latitude 7380
vs. ThinkPad X1 Carbon
vs. ThinkPad X1 Carbon

CalMAN measurements reveal a well-calibrated panel out of the box, with average deviances of just 2.9 / 3.7 in Colorchecker/Greyscale, respectively. Values below 5 are generally considered to be indiscernible to the naked eye.

Color analysis (pre-calibration)
Color analysis (pre-calibration)
Saturation sweeps (pre-calibration)
Saturation sweeps (pre-calibration)
Grayscale analysis (pre-calibration)
Grayscale analysis (pre-calibration)
Color analysis (post-calibration)
Color analysis (post-calibration)
Saturation sweeps (post-calibration)
Saturation sweeps (post-calibration)
Grayscale analysis (post-calibration)
Grayscale analysis (post-calibration)

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
30.4 ms ... rise ↗ and fall ↘ combined↗ 18.8 ms rise
↘ 11.6 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. » 77 % of all devices are better.
This means that the measured response time is worse than the average of all tested devices (26.1 ms).
       Response Time 50% Grey to 80% Grey
36.8 ms ... rise ↗ and fall ↘ combined↗ 18 ms rise
↘ 18.8 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. » 30 % of all devices are better.
This means that the measured response time is better than the average of all tested devices (41.7 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: 54 % of all tested devices do not use PWM to dim the display. If PWM was detected, an average of 10570 (minimum: 43 - maximum: 588200) Hz was measured.

The panel does not employ PWM at any brightness level. Response times are on the slower side, but this is nothing new for notebooks in this class. In spite of its touchscreen, the display is easily viewable outdoors thanks to its authentically matte finish and reasonable brightness/contrast levels. The IPS panel accommodates wide viewing angles.

Viewing angles, Latitude 7390
Viewing angles, Latitude 7390
In the sun
In the sun
In the shade
In the shade

Performance

A variety of different configurations are available for the Latitude 7390, one of which (Core i5, 8 GB RAM, 256 GB M.2 SSD) we reviewed just last month. This time, our device features a Core i7-8650U and an NVMe SSD (along with the same 8 GB of RAM). Since our experience thus far with the 8th-generation Intel CPUs has been that the higher-end chips carry diminishing returns on investment, one of the primary questions we’ll seek to address in today’s review is whether or not the Core i7 is worth the extra cash.

A secondary run of 3DMark 06 while operating unplugged verified that performance is not affected when running on battery power (score: 10339).

CPU-Z CPU
CPU-Z CPU
CPU-Z Caches
CPU-Z Caches
CPU-Z Mainboard
CPU-Z Mainboard
CPU-Z Memory
CPU-Z Memory
CPU-Z RAM SPD
CPU-Z RAM SPD
GPU-Z
GPU-Z
ComputeMark
ComputeMark
LatencyMon
LatencyMon

Processor

The Core i7-8650U is a quad-core SoC carrying operating frequencies of 1.9 GHz (base) all the way up to 4.2 GHz (max turbo). Given the constraints of its 15 W TDP and the accompanying high temperatures, it isn’t possible to maintain such high frequencies for more than a very short period of time. In light of this fact, is it possible to justify the higher cost of the Core i7 versus the i5 of last month’s model?

Before we directly answer this question, let’s first take a look at performance of the Latitude’s i7-8650U versus that of other machines. Judging by a total of 7 samples (at the time of this writing), the Latitude 7390 is slightly ahead of the average across all benchmarks. That’s good news since we’ve found it difficult to justify the purchase of an 8th-gen i7 in many other laptops after witnessing disappointing sustained performance scores. That isn’t to say that performance of these chips is underwhelming—it’s actually extremely good considering their power consumption—but the Core i5 SoCs manage such impressive scores already that the jump to an i7 is just very difficult to recommend.

Cinebench R11.5
Cinebench R11.5
Cinebench R15
Cinebench R15
ComputeMark
ComputeMark

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But what about the Latitude 7390? In the case of Cinebench R15, single-core performance is predictably pretty far ahead of that of the Core i5—some 14% faster. But multi-core performance is at first a bit more puzzling: we received an initial score of 625 from the Core i5 model and just 619 from today’s Core i7 unit. Does this spell doom for the Core i7’s real-world utility? Actually, not quite: taking a deeper look into the results sees much stabler (and higher) scores across repeated subsequent runs of the test in our standard Cinebench R15 multi-core loop test. While the Core i5 saw an initial dip in runs 2 through 6 to values ranging between 546 and 583 (and thereafter settling semi-permanently at around 580), the Core i7 machine remains in the 604 to 617 range for a full 40 runs, barring just two outliers (runs 15 and 16, scoring 578 / 580).

To condense this all down to a digestible number, this suggests around a 7 percent performance premium over the long term (as well as some more shorter-term clock rate consistency) in the i7 model. That may not sound like a lot for a cost premium of a couple hundred bucks, but unlike in many of the cases we’ve recently seen with 8th-gen Intel CPUs, it’s nevertheless something.

Cinebench R15
CPU Single 64Bit
Dell Latitude 7390
Intel Core i7-8650U
176 Points ∼85%
Average Intel Core i7-8650U
  (137 - 178, n=8)
171 Points ∼83% -3%
Lenovo ThinkPad X1 Carbon 2018-20KGS03900
Intel Core i7-8550U
168 Points ∼82% -5%
HP Elitebook 1040 G4-2XU40UT
Intel Core i7-7820HQ
166 Points ∼81% -6%
Dell Latitude 13 7380
Intel Core i7-7600U
161 Points ∼78% -9%
Dell Latitude 7390
Intel Core i5-8350U
152 Points ∼74% -14%
Asus ZenBook 13 UX331UN
Intel Core i7-8550U
150 Points ∼73% -15%
Average of class Office
  (20 - 178, n=443)
106 Points ∼51% -40%
CPU Multi 64Bit
Lenovo ThinkPad X1 Carbon 2018-20KGS03900
Intel Core i7-8550U
708 Points ∼24% +14%
Lenovo ThinkPad X1 Carbon 2018-20KGS03900
Intel Core i7-8550U
648 Points ∼22% +5%
HP Elitebook 1040 G4-2XU40UT
Intel Core i7-7820HQ
663 Points ∼23% +7%
Asus ZenBook 13 UX331UN
Intel Core i7-8550U
630 Points ∼21% +2%
Dell Latitude 7390
Intel Core i5-8350U
625 Points ∼21% +1%
Dell Latitude 7390
Intel Core i7-8650U
619 Points ∼21%
Average Intel Core i7-8650U
  (506 - 675, n=10)
612 Points ∼21% -1%
Dell Latitude 13 7380
Intel Core i7-7600U
359 Points ∼12% -42%
Average of class Office
  (36 - 736, n=447)
302 Points ∼10% -51%
Cinebench R11.5
CPU Single 64Bit
Dell Latitude 7390
Intel Core i7-8650U
2.02 Points ∼86%
Average Intel Core i7-8650U
  (1.7 - 2.04, n=6)
1.943 Points ∼83% -4%
Dell Latitude 13 7380
Intel Core i7-7600U
1.86 Points ∼79% -8%
HP Elitebook 1040 G4-2XU40UT
Intel Core i7-7820HQ
1.83 Points ∼78% -9%
Asus ZenBook 13 UX331UN
Intel Core i7-8550U
1.72 Points ∼74% -15%
Average of class Office
  (0.23 - 2.04, n=411)
1.113 Points ∼48% -45%
CPU Multi 64Bit
HP Elitebook 1040 G4-2XU40UT
Intel Core i7-7820HQ
7.36 Points ∼31% +8%
Dell Latitude 7390
Intel Core i7-8650U
6.82 Points ∼29%
Average Intel Core i7-8650U
  (5.77 - 7.24, n=6)
6.67 Points ∼28% -2%
Asus ZenBook 13 UX331UN
Intel Core i7-8550U
6.29 Points ∼26% -8%
Dell Latitude 13 7380
Intel Core i7-7600U
3.92 Points ∼16% -43%
Average of class Office
  (0.26 - 8.16, n=583)
2.67 Points ∼11% -61%
wPrime 2.0x - 1024m
Average of class Office
  (206 - 4269, n=378)
847 s * ∼10% -216%
Dell Latitude 13 7380
Intel Core i7-7600U
445.8 s * ∼5% -66%
HP Elitebook 1040 G4-2XU40UT
Intel Core i7-7820HQ
316.99 s * ∼4% -18%
Average Intel Core i7-8650U
  (268 - 335, n=3)
302 s * ∼4% -13%
Dell Latitude 7390
Intel Core i7-8650U
268.279 s * ∼3%
Super Pi Mod 1.5 XS 32M - ---
Average Intel Core i7-8650U
  (8 - 7939, n=16)
1954 Seconds * ∼9% -261%
Average of class Office
  (-1 - 107890, n=5948)
1573 Seconds * ∼7% -190%
Dell Latitude 13 7380
Intel Core i7-7600U
543 Seconds * ∼2% -0%
Dell Latitude 7390
Intel Core i7-8650U
542 Seconds * ∼2%
HP Elitebook 1040 G4-2XU40UT
Intel Core i7-7820HQ
526.92 Seconds * ∼2% +3%

* ... smaller is better

Cinebench R11.5 CPU Single 64Bit
2.02 Points
Cinebench R11.5 CPU Multi 64Bit
6.82 Points
Cinebench R11.5 OpenGL 64Bit
47.18 fps
Cinebench R15 CPU Single 64Bit
176 Points
Cinebench R15 CPU Multi 64Bit
619 Points
Cinebench R15 OpenGL 64Bit
48.2 fps
Cinebench R15 Ref. Match 64Bit
97.8 %
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Cinebench R15 CPU Multi 64 Bit

System Performance

Thanks to the jump from conventional M.2 storage to an NVMe drive (specifically, a Samsung PM961 256 GB solid-state drive), the Latitude 7390 musters system performance scores some 8 to 12 percent above last month’s unit, and instead much closer to last year’s Latitude 7380 (which featured the same SSD). Subjectively speaking, we certainly have no complaints with regard to the machine’s performance, which was fluid and zippy throughout our time with it.

PCMark 8 Home Accelerated
PCMark 8 Home Accelerated
PCMark 8 Work Accelerated
PCMark 8 Work Accelerated
PCMark 8 Creative Accelerated
PCMark 8 Creative Accelerated
PCMark 10
PCMark 10
PCMark 8
Work Score Accelerated v2
Dell Latitude 7390
UHD Graphics 620, 8650U, Samsung PM961 MZVLW256HEHP
5197 Points ∼80%
HP Elitebook 1040 G4-2XU40UT
HD Graphics 630, 7820HQ, Toshiba XG4 NVMe (THNSN5512GPUK)
5161 Points ∼79% -1%
Dell Latitude 13 7380
HD Graphics 620, 7600U, Samsung PM961 MZVLW256HEHP
5060 Points ∼78% -3%
Average Intel Core i7-8650U, Intel UHD Graphics 620
  (3926 - 5200, n=5)
4891 Points ∼75% -6%
Asus ZenBook 13 UX331UN
GeForce MX150, 8550U, SK Hynix HFS256G39TND-N210A
4811 Points ∼74% -7%
Dell Latitude 7390
UHD Graphics 620, 8350U, SK hynix SC311 M.2
4768 Points ∼73% -8%
Lenovo ThinkPad X1 Carbon 2018-20KGS03900
UHD Graphics 620, 8550U, Samsung SSD PM981 MZVLB512HAJQ-000L7
4664 Points ∼72% -10%
Average of class Office
  (1226 - 5200, n=280)
3897 Points ∼60% -25%
Creative Score Accelerated v2
HP Elitebook 1040 G4-2XU40UT
HD Graphics 630, 7820HQ, Toshiba XG4 NVMe (THNSN5512GPUK)
5275 Points ∼55% +4%
Dell Latitude 7390
UHD Graphics 620, 8650U, Samsung PM961 MZVLW256HEHP
5083 Points ∼53%
Lenovo ThinkPad X1 Carbon 2018-20KGS03900
UHD Graphics 620, 8550U, Samsung SSD PM981 MZVLB512HAJQ-000L7
5027 Points ∼53% -1%
Average Intel Core i7-8650U, Intel UHD Graphics 620
  (4572 - 5225, n=5)
4983 Points ∼52% -2%
Dell Latitude 13 7380
HD Graphics 620, 7600U, Samsung PM961 MZVLW256HEHP
4958 Points ∼52% -2%
Asus ZenBook 13 UX331UN
GeForce MX150, 8550U, SK Hynix HFS256G39TND-N210A
4765 Points ∼50% -6%
Average of class Office
  (869 - 5275, n=222)
3306 Points ∼35% -35%
Home Score Accelerated v2
HP Elitebook 1040 G4-2XU40UT
HD Graphics 630, 7820HQ, Toshiba XG4 NVMe (THNSN5512GPUK)
4186 Points ∼69% +8%
Dell Latitude 7390
UHD Graphics 620, 8650U, Samsung PM961 MZVLW256HEHP
3886 Points ∼64%
Dell Latitude 13 7380
HD Graphics 620, 7600U, Samsung PM961 MZVLW256HEHP
3872 Points ∼64% 0%
Average Intel Core i7-8650U, Intel UHD Graphics 620
  (3216 - 4065, n=5)
3791 Points ∼62% -2%
Asus ZenBook 13 UX331UN
GeForce MX150, 8550U, SK Hynix HFS256G39TND-N210A
3780 Points ∼62% -3%
Lenovo ThinkPad X1 Carbon 2018-20KGS03900
UHD Graphics 620, 8550U, Samsung SSD PM981 MZVLB512HAJQ-000L7
3752 Points ∼62% -3%
Dell Latitude 7390
UHD Graphics 620, 8350U, SK hynix SC311 M.2
3600 Points ∼59% -7%
Average of class Office
  (1169 - 4458, n=321)
2973 Points ∼49% -23%
PCMark 10
Digital Content Creation
HP Elitebook 1040 G4-2XU40UT
HD Graphics 630, 7820HQ, Toshiba XG4 NVMe (THNSN5512GPUK)
3108 Points ∼33% +1%
Dell Latitude 7390
UHD Graphics 620, 8650U, Samsung PM961 MZVLW256HEHP
3068 Points ∼33%
Lenovo ThinkPad X1 Carbon 2018-20KGS03900
UHD Graphics 620, 8550U, Samsung SSD PM981 MZVLB512HAJQ-000L7
3062 Points ∼32% 0%
Average Intel Core i7-8650U, Intel UHD Graphics 620
  (2117 - 3174, n=5)
2764 Points ∼29% -10%
Dell Latitude 13 7380
HD Graphics 620, 7600U, Samsung PM961 MZVLW256HEHP
2565 Points ∼27% -16%
Average of class Office
  (320 - 3258, n=66)
2464 Points ∼26% -20%
Asus ZenBook 13 UX331UN
GeForce MX150, 8550U, SK Hynix HFS256G39TND-N210A
2206 Points ∼23% -28%
Productivity
Dell Latitude 7390
UHD Graphics 620, 8650U, Samsung PM961 MZVLW256HEHP
7142 Points ∼75%
Dell Latitude 13 7380
HD Graphics 620, 7600U, Samsung PM961 MZVLW256HEHP
6937 Points ∼73% -3%
HP Elitebook 1040 G4-2XU40UT
HD Graphics 630, 7820HQ, Toshiba XG4 NVMe (THNSN5512GPUK)
6835 Points ∼72% -4%
Lenovo ThinkPad X1 Carbon 2018-20KGS03900
UHD Graphics 620, 8550U, Samsung SSD PM981 MZVLB512HAJQ-000L7
6727 Points ∼71% -6%
Average Intel Core i7-8650U, Intel UHD Graphics 620
  (5271 - 7142, n=5)
6389 Points ∼67% -11%
Asus ZenBook 13 UX331UN
GeForce MX150, 8550U, SK Hynix HFS256G39TND-N210A
5664 Points ∼60% -21%
Average of class Office
  (1639 - 7142, n=66)
5509 Points ∼58% -23%
Essentials
HP Elitebook 1040 G4-2XU40UT
HD Graphics 630, 7820HQ, Toshiba XG4 NVMe (THNSN5512GPUK)
8446 Points ∼84% +2%
Dell Latitude 7390
UHD Graphics 620, 8650U, Samsung PM961 MZVLW256HEHP
8253 Points ∼82%
Lenovo ThinkPad X1 Carbon 2018-20KGS03900
UHD Graphics 620, 8550U, Samsung SSD PM981 MZVLB512HAJQ-000L7
7849 Points ∼78% -5%
Dell Latitude 13 7380
HD Graphics 620, 7600U, Samsung PM961 MZVLW256HEHP
7802 Points ∼78% -5%
Average Intel Core i7-8650U, Intel UHD Graphics 620
  (6877 - 8253, n=5)
7696 Points ∼76% -7%
Asus ZenBook 13 UX331UN
GeForce MX150, 8550U, SK Hynix HFS256G39TND-N210A
6855 Points ∼68% -17%
Average of class Office
  (2683 - 8523, n=66)
6827 Points ∼68% -17%
Score
Dell Latitude 7390
UHD Graphics 620, 8650U, Samsung PM961 MZVLW256HEHP
4053 Points ∼52%
HP Elitebook 1040 G4-2XU40UT
HD Graphics 630, 7820HQ, Toshiba XG4 NVMe (THNSN5512GPUK)
4043 Points ∼52% 0%
Lenovo ThinkPad X1 Carbon 2018-20KGS03900
UHD Graphics 620, 8550U, Samsung SSD PM981 MZVLB512HAJQ-000L7
3905 Points ∼50% -4%
Dell Latitude 13 7380
HD Graphics 620, 7600U, Samsung PM961 MZVLW256HEHP
3711 Points ∼48% -8%
Dell Latitude 7390
UHD Graphics 620, 8350U, SK hynix SC311 M.2
3577 Points ∼46% -12%
Average Intel Core i7-8650U, Intel UHD Graphics 620
  (2403 - 4066, n=5)
3494 Points ∼45% -14%
Asus ZenBook 13 UX331UN
GeForce MX150, 8550U, SK Hynix HFS256G39TND-N210A
3160 Points ∼41% -22%
Average of class Office
  (803 - 4066, n=67)
3095 Points ∼40% -24%
PCMark 8 Home Score Accelerated v2
3886 points
PCMark 8 Creative Score Accelerated v2
5083 points
PCMark 8 Work Score Accelerated v2
5197 points
Help

Storage Devices

Last month’s SK Hynix SC311 can’t hold a candle to the Samsung PM961 in today’s test unit—but likewise, the PM961 is easily outclassed by the PM981 installed in the ThinkPad X1 Carbon. Still, an AS SSD score of 2215 (spurred by sequential read/write speeds of 1760.62 MB/s and 830 MB/s) is nothing embarrassing, and most users would hardly even notice the difference moving farther beyond these speeds in everyday usage scenarios.

AS SSD
AS SSD
CrystalDiskMark 5.2
CrystalDiskMark 5.2
PCMark 8 Storage Accelerated
PCMark 8 Storage Accelerated
Dell Latitude 7390
Samsung PM961 MZVLW256HEHP
Dell Latitude 7390
SK hynix SC311 M.2
Lenovo ThinkPad X1 Carbon 2018-20KGS03900
Samsung SSD PM981 MZVLB512HAJQ-000L7
HP Elitebook 1040 G4-2XU40UT
Toshiba XG4 NVMe (THNSN5512GPUK)
Average Samsung PM961 MZVLW256HEHP
 
AS SSD
-53%
91%
-3%
-103%
Copy Game MB/s
352.02
1107.45
215%
394.2
12%
542 (269 - 1115, n=31)
54%
Copy Program MB/s
247.36
460.17
86%
133.7
-46%
327 (121 - 569, n=31)
32%
Copy ISO MB/s
818.25
1246.8
52%
534
-35%
1016 (420 - 1912, n=31)
24%
Score Total
2215
857
-61%
3529
59%
2299
4%
2522 (35 - 4653, n=50)
14%
Score Write
501
311
-38%
1801
259%
848
69%
551 (48 - 1029, n=50)
10%
Score Read
1158
359
-69%
1168
1%
979
-15%
1384 (363 - 2545, n=50)
20%
Access Time Write *
0.032
0.056
-75%
0.027
16%
0.038
-19%
0.556 (0.023 - 4.15, n=50)
-1638%
Access Time Read *
0.063
0.075
-19%
0.029
54%
0.105
-67%
0.0679 (0.04 - 0.49, n=50)
-8%
4K-64 Write
302.35
210.34
-30%
1529.32
406%
661.6
119%
390 (15.3 - 1652, n=50)
29%
4K-64 Read
932.15
282.75
-70%
876.34
-6%
781.7
-16%
1112 (199 - 2280, n=50)
19%
4K Write
115.21
63.57
-45%
134.3
17%
100.06
-13%
92 (1.16 - 161, n=50)
-20%
4K Read
49.43
27.31
-45%
52.4
6%
38.49
-22%
46.2 (21.5 - 54.1, n=50)
-7%
Seq Write
830.13
369.9
-55%
1376.19
66%
862.7
4%
922 (223 - 1392, n=50)
11%
Seq Read
1760.62
485.52
-72%
2395.87
36%
1584.7
-10%
2029 (768 - 2834, n=50)
15%

* ... smaller is better

Samsung PM961 MZVLW256HEHP
CDM 5/6 Read Seq Q32T1: 3116 MB/s
CDM 5/6 Write Seq Q32T1: 1195 MB/s
CDM 5/6 Read 4K Q32T1: 413.9 MB/s
CDM 5/6 Write 4K Q32T1: 662 MB/s
CDM 5 Read Seq: 1639 MB/s
CDM 5 Write Seq: 1075 MB/s
CDM 5/6 Read 4K: 43.18 MB/s
CDM 5/6 Write 4K: 139.4 MB/s

GPU Performance

Somewhat slimmer margins separate the Core i5 and Core i7 Latitude 7390—around 2 percent to 8 percent. Regardless of this, the overall average of all Intel UHD Graphics devices we’ve tested remains slightly higher (several percentage points in most cases). The ThinkPad X1 Carbon (equipped with an i7-8550U) is some 25 to 35 percent faster across our slew of benchmarks, which is impressive. Although it’s perfectly capable of handling any everyday activities, the 7390 is not expected to be any sort of graphical powerhouse.

3DMark Ice Storm Extreme
3DMark Ice Storm Extreme
3DMark Ice Storm Unlimited
3DMark Ice Storm Unlimited
3DMark Cloud Gate
3DMark Cloud Gate
3DMark Fire Strike
3DMark Fire Strike
3DMark 06
3DMark 06
3DMark 11
3DMark 11
3DMark 11
1280x720 Performance Combined
Asus ZenBook 13 UX331UN
NVIDIA GeForce MX150, 8550U
3553 Points ∼20% +156%
Lenovo ThinkPad X1 Carbon 2018-20KGS03900
Intel UHD Graphics 620, 8550U
1880 Points ∼11% +35%
HP Elitebook 1040 G4-2XU40UT
Intel HD Graphics 630, 7820HQ
1829 Points ∼10% +32%
Average Intel UHD Graphics 620
  (959 - 1891, n=71)
1464 Points ∼8% +5%
Dell Latitude 7390
Intel UHD Graphics 620, 8650U
1390 Points ∼8%
Dell Latitude 13 7380
Intel HD Graphics 620, 7600U
1322 Points ∼8% -5%
Dell Latitude 7390
Intel UHD Graphics 620, 8350U
1279 Points ∼7% -8%
Average of class Office
  (169 - 4566, n=565)
1079 Points ∼6% -22%
1280x720 Performance GPU
Asus ZenBook 13 UX331UN
NVIDIA GeForce MX150, 8550U
3461 Points ∼7% +104%
Lenovo ThinkPad X1 Carbon 2018-20KGS03900
Intel UHD Graphics 620, 8550U
1901 Points ∼4% +12%
HP Elitebook 1040 G4-2XU40UT
Intel HD Graphics 630, 7820HQ
1732 Points ∼3% +2%
Dell Latitude 7390
Intel UHD Graphics 620, 8650U
1697 Points ∼3%
Average Intel UHD Graphics 620
  (1366 - 1915, n=71)
1653 Points ∼3% -3%
Dell Latitude 13 7380
Intel HD Graphics 620, 7600U
1633 Points ∼3% -4%
Dell Latitude 7390
Intel UHD Graphics 620, 8350U
1606 Points ∼3% -5%
Average of class Office
  (185 - 4967, n=566)
1160 Points ∼2% -32%
3DMark
1920x1080 Fire Strike Graphics
Asus ZenBook 13 UX331UN
NVIDIA GeForce MX150, 8550U
2826 Points ∼7% +189%
Lenovo ThinkPad X1 Carbon 2018-20KGS03900
Intel UHD Graphics 620, 8550U
1283 Points ∼3% +31%
HP Elitebook 1040 G4-2XU40UT
Intel HD Graphics 630, 7820HQ
1198 Points ∼3% +23%
Average Intel UHD Graphics 620
  (819 - 1336, n=64)
1061 Points ∼3% +9%
Dell Latitude 7390
Intel UHD Graphics 620, 8650U
977 Points ∼2%
Dell Latitude 7390
Intel UHD Graphics 620, 8350U
959 Points ∼2% -2%
Dell Latitude 13 7380
Intel HD Graphics 620, 7600U
926 Points ∼2% -5%
Average of class Office
  (138 - 4109, n=404)
889 Points ∼2% -9%
1280x720 Cloud Gate Standard Graphics
Asus ZenBook 13 UX331UN
NVIDIA GeForce MX150, 8550U
18346 Points ∼10% +122%
Lenovo ThinkPad X1 Carbon 2018-20KGS03900
Intel UHD Graphics 620, 8550U
10123 Points ∼5% +23%
HP Elitebook 1040 G4-2XU40UT
Intel HD Graphics 630, 7820HQ
9921 Points ∼5% +20%
Average Intel UHD Graphics 620
  (6910 - 10493, n=66)
8640 Points ∼5% +5%
Dell Latitude 7390
Intel UHD Graphics 620, 8650U
8247 Points ∼4%
Dell Latitude 7390
Intel UHD Graphics 620, 8350U
8104 Points ∼4% -2%
Dell Latitude 13 7380
Intel HD Graphics 620, 7600U
7794 Points ∼4% -5%
Average of class Office
  (1208 - 27117, n=448)
6286 Points ∼3% -24%
1280x720 offscreen Ice Storm Unlimited Graphics Score
Asus ZenBook 13 UX331UN
NVIDIA GeForce MX150, 8550U
179120 Points ∼38% +109%
HP Elitebook 1040 G4-2XU40UT
Intel HD Graphics 630, 7820HQ
103815 Points ∼22% +21%
Dell Latitude 7390
Intel UHD Graphics 620, 8650U
85619 Points ∼18%
Average Intel UHD Graphics 620
  (67741 - 104630, n=36)
85584 Points ∼18% 0%
Average of class Office
  (16669 - 204769, n=88)
78249 Points ∼17% -9%
Dell Latitude 13 7380
Intel HD Graphics 620, 7600U
69222 Points ∼15% -19%
1920x1080 Ice Storm Extreme Graphics
Dell Latitude 7390
Intel UHD Graphics 620, 8650U
44697 Points ∼6%
Average Intel UHD Graphics 620
  (30939 - 55131, n=24)
44335 Points ∼6% -1%
Dell Latitude 13 7380
Intel HD Graphics 620, 7600U
40760 Points ∼6% -9%
Average of class Office
  (8473 - 86732, n=108)
39047 Points ∼5% -13%
1280x720 Ice Storm Standard Graphics
Dell Latitude 7390
Intel UHD Graphics 620, 8650U
73589 Points ∼10%
Average Intel UHD Graphics 620
  (43091 - 96590, n=24)
70679 Points ∼9% -4%
Dell Latitude 13 7380
Intel HD Graphics 620, 7600U
52940 Points ∼7% -28%
Average of class Office
  (633 - 120392, n=384)
47063 Points ∼6% -36%
3DMark 06 Standard
10376 points
3DMark 11 Performance
1860 points
3DMark Ice Storm Standard Score
65709 points
3DMark Cloud Gate Standard Score
7770 points
3DMark Fire Strike Score
915 points
Help
BioShock Infinite
1920x1080 Ultra Preset, DX11 (DDOF) (sort by value)
Dell Latitude 7390
UHD Graphics 620, 8650U, Samsung PM961 MZVLW256HEHP
8 fps ∼3%
Dell Latitude 13 7380
HD Graphics 620, 7600U, Samsung PM961 MZVLW256HEHP
7 fps ∼3% -12%
Lenovo ThinkPad X1 Carbon 2018-20KGS03900
UHD Graphics 620, 8550U, Samsung SSD PM981 MZVLB512HAJQ-000L7
10.4 fps ∼4% +30%
Asus ZenBook 13 UX331UN
GeForce MX150, 8550U, SK Hynix HFS256G39TND-N210A
27.8 fps ∼10% +248%
Average Intel UHD Graphics 620
  (6.2 - 11, n=58)
8.67 fps ∼3% +8%
Average of class Office
  (5.3 - 39.6, n=183)
9.6 fps ∼4% +20%
1366x768 High Preset (sort by value)
Dell Latitude 7390
UHD Graphics 620, 8650U, Samsung PM961 MZVLW256HEHP
24 fps ∼8%
Dell Latitude 13 7380
HD Graphics 620, 7600U, Samsung PM961 MZVLW256HEHP
22 fps ∼7% -8%
Lenovo ThinkPad X1 Carbon 2018-20KGS03900
UHD Graphics 620, 8550U, Samsung SSD PM981 MZVLB512HAJQ-000L7
30.4 fps ∼10% +27%
HP Elitebook 1040 G4-2XU40UT
HD Graphics 630, 7820HQ, Toshiba XG4 NVMe (THNSN5512GPUK)
30 fps ∼10% +25%
Asus ZenBook 13 UX331UN
GeForce MX150, 8550U, SK Hynix HFS256G39TND-N210A
71.7 fps ∼23% +199%
Average Intel UHD Graphics 620
  (15.6 - 34.3, n=62)
25.6 fps ∼8% +7%
Average of class Office
  (12.9 - 107, n=277)
24.6 fps ∼8% +3%
1366x768 Medium Preset (sort by value)
Dell Latitude 7390
UHD Graphics 620, 8650U, Samsung PM961 MZVLW256HEHP
30 fps ∼9%
Dell Latitude 13 7380
HD Graphics 620, 7600U, Samsung PM961 MZVLW256HEHP
27 fps ∼8% -10%
Lenovo ThinkPad X1 Carbon 2018-20KGS03900
UHD Graphics 620, 8550U, Samsung SSD PM981 MZVLB512HAJQ-000L7
36.2 fps ∼10% +21%
HP Elitebook 1040 G4-2XU40UT
HD Graphics 630, 7820HQ, Toshiba XG4 NVMe (THNSN5512GPUK)
35 fps ∼10% +17%
Asus ZenBook 13 UX331UN
GeForce MX150, 8550U, SK Hynix HFS256G39TND-N210A
78.9 fps ∼23% +163%
Average Intel UHD Graphics 620
  (19.8 - 40.4, n=62)
30.7 fps ∼9% +2%
Average of class Office
  (9.11 - 119, n=297)
28.3 fps ∼8% -6%
1280x720 Very Low Preset (sort by value)
Dell Latitude 7390
UHD Graphics 620, 8650U, Samsung PM961 MZVLW256HEHP
56 fps ∼14%
Dell Latitude 13 7380
HD Graphics 620, 7600U, Samsung PM961 MZVLW256HEHP
44 fps ∼11% -21%
Lenovo ThinkPad X1 Carbon 2018-20KGS03900
UHD Graphics 620, 8550U, Samsung SSD PM981 MZVLB512HAJQ-000L7
56.9 fps ∼14% +2%
HP Elitebook 1040 G4-2XU40UT
HD Graphics 630, 7820HQ, Toshiba XG4 NVMe (THNSN5512GPUK)
79 fps ∼20% +41%
Asus ZenBook 13 UX331UN
GeForce MX150, 8550U, SK Hynix HFS256G39TND-N210A
98.1 fps ∼25% +75%
Average Intel UHD Graphics 620
  (32.6 - 80.3, n=62)
56.1 fps ∼14% 0%
Average of class Office
  (12.2 - 185, n=292)
49.5 fps ∼12% -12%
low med. high ultra
BioShock Infinite (2013) 5630248fps

Stress Test

Unsurprisingly, the Latitude 7390 can’t maintain high turbo clock rates for longer than a short period of time in our synthetic stress tests. This limitation is hardly unique to the Latitude, however, as we’ve witnessed similar behavior from practically every 8th-generation Intel-powered device we’ve tested. Although max clock rates of 4.2 GHz are never even really reached under heavy loads, the laptop is at least capable of maintaining 2.9 GHz stably across all four cores—an achievement that renders it far faster than its 7th-generation predecessors in any CPU-intensive activity. You can see in our graphs below that as the demand on the CPU suddenly starts, we see a spike in CPU Package Power (to some 44 W) and initial core clock rates (to around 3.8 GHz), but just seconds later the power consumption begins dropping rather sharply down to 22 W, where it remains.

Full GPU stress produces stable clock rates of 1000 MHz from the GPU (1150 MHz is the maximum specified for the chip); temperatures remain stable at around 76 °C.

Combined CPU and GPU stress sees the system favoring GPU over CPU clock rates. The former holds firm at 950 MHz and the latter drops all the way to 1.5 GHz, where it stays permanently (temperatures, meanwhile, hover around the 77 – 78 °C mark). That qualifies as CPU throttling since it’s below the base frequency of 1.9 GHz—though it’s not likely that such a scenario would apply during real-world usage.

Full CPU stress
Full CPU stress
Full CPU stress
Full CPU stress
CPU + GPU stress
CPU + GPU stress
CPU Clock (GHz) GPU Clock (MHz) Average CPU Temperature (°C) Average GPU Temperature (°C)
Prime95 Stress 2.9 - 90 -
FurMark Stress - 1000 - 76
Prime95 + FurMark Stress 1.5 950 77 77

Emissions

System Noise

In terms of operating noise, nothing significant has changed since last month’s review unit. The machine is still completely silent while idling, rarely audible during moderate use, and pretty noticeable if heavily stressed; we measured up to 42.7 dB(A) under load. Apart from the Asus ZenBook 13, this is quite a bit louder than the rest of the competition (which all hover around the 35 dB(A) mark under load)—but it’s not very common that such conditions are in play, so it’s rarely likely to be an issue.

Noise Level

Idle
28.2 / 28.2 / 28.2 dB(A)
Load
31.5 / 42.7 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: 28.2 dB(A)
Fan noise, Latitude 7390
Fan noise, Latitude 7390
Dell Latitude 7390
UHD Graphics 620, 8650U, Samsung PM961 MZVLW256HEHP
Dell Latitude 7390
UHD Graphics 620, 8350U, SK hynix SC311 M.2
Dell Latitude 13 7380
HD Graphics 620, 7600U, Samsung PM961 MZVLW256HEHP
Lenovo ThinkPad X1 Carbon 2018-20KGS03900
UHD Graphics 620, 8550U, Samsung SSD PM981 MZVLB512HAJQ-000L7
HP Elitebook 1040 G4-2XU40UT
HD Graphics 630, 7820HQ, Toshiba XG4 NVMe (THNSN5512GPUK)
Asus ZenBook 13 UX331UN
GeForce MX150, 8550U, SK Hynix HFS256G39TND-N210A
Noise
-3%
3%
-2%
2%
-8%
off / environment *
28.2
29.5
-5%
28
1%
28.9
-2%
28.2
-0%
30.13
-7%
Idle Minimum *
28.2
29.5
-5%
28
1%
28.9
-2%
28.2
-0%
30.13
-7%
Idle Average *
28.2
29.5
-5%
28
1%
28.9
-2%
28.2
-0%
30.3
-7%
Idle Maximum *
28.2
29.5
-5%
29.6
-5%
32.5
-15%
28.2
-0%
30.3
-7%
Load Average *
31.5
32.4
-3%
30.6
3%
35.1
-11%
33.3
-6%
39.2
-24%
Load Maximum *
42.7
39.9
7%
35.4
17%
35.1
18%
35.3
17%
41
4%

* ... smaller is better

Temperature

Temperature differences are mostly confined to usage while idling, and this is more than likely due to the upgrade to the NVMe SSD; note that it’s the bottom-right of the machine (when flipped) that exhibits the most visible rise in surface temperatures—about 2 °C. That may not sound like much, but since it brings the surface temperature of the underside to an average of 24.9 °C (nearly 5 °C above ambient room temperatures), it could prove irritating for those who plan to use the machine on the lap frequently.

Max. Load
 44.4 °C43.2 °C35.2 °C 
 41.4 °C38.8 °C32 °C 
 28.8 °C29.4 °C26.8 °C 
Maximum: 44.4 °C
Average: 35.6 °C
33.8 °C47.4 °C45 °C
30.6 °C40 °C40.2 °C
29.4 °C33.6 °C33.8 °C
Maximum: 47.4 °C
Average: 37.1 °C
Power Supply (max.)  37 °C | Room Temperature 21.2 °C | Fluke 62 Mini IR Thermometer
Thermal profile, max load (top)
Thermal profile, max load (top)
Thermal profile, max load (side)
Thermal profile, max load (side)
Thermal profile, max load (underside)
Thermal profile, max load (underside)
Thermal profile, idle (top)
Thermal profile, idle (top)
Thermal profile, idle (underside)
Thermal profile, idle (underside)

Speakers

The speakers themselves haven’t changed since our previous review, but our results this time around were more positive than last month’s. The shape of the audio is still merely average, but the machine ranks better than most in its class. The difference is probably in the post-processing software.

dB(A) 0102030405060708090Deep BassMiddle BassHigh BassLower RangeMidsHigher MidsLower HighsMid HighsUpper HighsSuper Highs2035.838.835.82535.134.535.1313333.3334032.43432.45032.531.932.56330.131.330.18031.530.231.510030.529.830.512533.828.333.816043.627.543.620047.327.747.325052.126.752.131556.425.956.440054.625.754.650052.324.752.363056.724.356.780062.62462.6100060.123.960.1125059.223.359.2160063.223.363.2200057.922.857.9250058.622.958.6315052.922.852.9400055.922.955.9500062.122.862.1630061.122.761.1800053.722.853.71000058.922.758.91250056.822.756.81600054.422.854.4SPL71.435.571.4N29.12.529.1median 56.4Dell Latitude 7390median 23.3median 56.4Delta4.61.34.634.83330.328.135.438.130.332.226.631.825.827.624.725.123.926.524.833.424.141.923.94821.85120.155.318.261.117.366.61770.316.578.416.57515.868.915.770.615.467.615.569.21672.916.268.616.7701771.217.272.217.470.917.365.817.256.228.983.61.258.7median 17.2Lenovo ThinkPad X1 Carbon 2018-20KGS03900median 68.61.88.6hearing rangehide median Pink Noise
Frequency diagram (checkboxes can be checked and unchecked to compare devices)
Dell Latitude 7390 audio analysis

(-) | not very loud speakers (71.4 dB)
Bass 100 - 315 Hz
(±) | reduced bass - on average 12.4% lower than median
(±) | linearity of bass is average (13.6% delta to prev. frequency)
Mids 400 - 2000 Hz
(+) | balanced mids - only 3.4% away from median
(±) | linearity of mids is average (10.3% delta to prev. frequency)
Highs 2 - 16 kHz
(+) | balanced highs - only 3.1% away from median
(±) | linearity of highs is average (12.6% delta to prev. frequency)
Overall 100 - 16.000 Hz
(±) | linearity of overall sound is average (16.6% difference to median)
Compared to same class
» 22% of all tested devices in this class were better, 7% similar, 71% worse
» The best had a delta of 8%, average was 21%, worst was 51%
Compared to all devices tested
» 24% of all tested devices were better, 6% similar, 70% worse
» The best had a delta of 3%, average was 21%, worst was 53%

Lenovo ThinkPad X1 Carbon 2018-20KGS03900 audio analysis

(+) | speakers can play relatively loud (83.6 dB)
Bass 100 - 315 Hz
(-) | nearly no bass - on average 25.9% lower than median
(±) | linearity of bass is average (9.8% delta to prev. frequency)
Mids 400 - 2000 Hz
(+) | balanced mids - only 3.8% away from median
(±) | linearity of mids is average (9% delta to prev. frequency)
Highs 2 - 16 kHz
(+) | balanced highs - only 2.1% away from median
(+) | highs are linear (4% delta to prev. frequency)
Overall 100 - 16.000 Hz
(±) | linearity of overall sound is average (18.3% difference to median)
Compared to same class
» 37% of all tested devices in this class were better, 11% similar, 53% worse
» The best had a delta of 8%, average was 21%, worst was 51%
Compared to all devices tested
» 34% of all tested devices were better, 6% similar, 60% worse
» The best had a delta of 3%, average was 21%, worst was 53%

Energy Management

Power Consumption

Power consumption has only risen slightly over the Core i5 model; a mere difference of 0.3 W while idling (average) and 0.2 W under load. We didn’t see any spikes into the 60 W range thing time around, but we’ll discover in the next section whether any of these observations affect battery life.

Power consumption graph, low to high brightness
Power consumption graph, low to high brightness
Power consumption graph, Prime95 stress
Power consumption graph, Prime95 stress
Power Consumption
Idledarkmidlight 3.3 / 5.9 / 6.2 Watt
Load midlight 43.2 / 45.2 Watt
 color bar
Key: min: dark, med: mid, max: light        Metrahit Energy
Dell Latitude 7390
8650U, UHD Graphics 620, Samsung PM961 MZVLW256HEHP, IPS, 1920x1080, 13.3
Dell Latitude 7390
8350U, UHD Graphics 620, SK hynix SC311 M.2, IPS, 1920x1080, 13.3
Dell Latitude 13 7380
7600U, HD Graphics 620, Samsung PM961 MZVLW256HEHP, IPS, 1920x1080, 13.3
Lenovo ThinkPad X1 Carbon 2018-20KGS03900
8550U, UHD Graphics 620, Samsung SSD PM981 MZVLB512HAJQ-000L7, IPS, 2560x1440, 14
HP Elitebook 1040 G4-2XU40UT
7820HQ, HD Graphics 630, Toshiba XG4 NVMe (THNSN5512GPUK), IPS, 1920x1080, 14
Asus ZenBook 13 UX331UN
8550U, GeForce MX150, SK Hynix HFS256G39TND-N210A, IPS, 1920x1080, 13.3
Power Consumption
-4%
15%
-37%
-37%
7%
Idle Minimum *
3.3
2.34
29%
3.2
3%
3.8
-15%
5.1
-55%
2.2
33%
Idle Average *
5.9
5.6
5%
5.5
7%
8.9
-51%
7
-19%
5
15%
Idle Maximum *
6.2
6.5
-5%
6.1
2%
11.9
-92%
11.7
-89%
8
-29%
Load Average *
43.2
43
-0%
29.5
32%
47.5
-10%
41.2
5%
33
24%
Load Maximum *
45.2
67.4
-49%
32
29%
52.5
-16%
56.9
-26%
49.4
-9%

* ... smaller is better

Battery Life

The Latitude 7390 maintains excellent battery runtimes even with its faster CPU. We recorded 11 hours and 4 minutes of life during our standardized web surfing benchmark, which is a bit ahead of the Latitude 7380’s 10 hours and 30 minutes. It’s also around two and a half hours longer than the X1 Carbon (8:39) and a little over two hours longer than the Asus ZenBook 13 (8:58). Only the Elitebook Folio 1040 G4 matches it with 11 hours and 5 minutes.

Battery Runtime
NBC WiFi Websurfing Battery Test 1.3
11h 04min
Dell Latitude 7390
8650U, UHD Graphics 620, 60 Wh
Dell Latitude 7390
8350U, UHD Graphics 620, 60 Wh
Dell Latitude 13 7380
7600U, HD Graphics 620, 60 Wh
Lenovo ThinkPad X1 Carbon 2018-20KGS03900
8550U, UHD Graphics 620, 57 Wh
HP Elitebook 1040 G4-2XU40UT
7820HQ, HD Graphics 630, 65 Wh
Asus ZenBook 13 UX331UN
8550U, GeForce MX150, 50 Wh
Battery Runtime
-5%
-22%
0%
-19%
Reader / Idle
1660
1594
1328
1349
1240
WiFi v1.3
664
630
-5%
519
-22%
665
0%
538
-19%
Load
92
141
106
96
105

Pros

+ impeccable magnesium build
+ lightweight with small footprint
+ truly anti-glare touchscreen
+ thorough security features
+ strong selection of ports, including Thunderbolt 3
+ easy maintenance via removable bottom cover
+ excellent keyboard
+ good touchpad with separate physical buttons
+ terrific battery life
+ great IPS display with good color accuracy
+ nearly silent while idling and under moderate usage
+ fast NVMe storage
+ 3-year, on-site warranty

Cons

- impossible to open one-handed
- questionable value of the Core i7 upgrade
- fingerprint reader seems pickier than some models
- hinge design allows the lid to raise the base under wider opening angles
- surface temperatures while idling can be a bit bothersome on lap

Verdict

In review: Dell Latitude 7390. Test model provided by Dell US
In review: Dell Latitude 7390. Test model provided by Dell US

Our list of complaints has shrunk since last month’s Latitude 7390 review, partially thanks to configuration differences with today’s review unit, and partially just because some of these items may be a product of idiosyncrasies of the individual machines themselves. The upgrade to a Core i7 certainly brings with it some performance advantages—most notably during sustained loads, where speeds are not only better but also more consistent overall. However, for the vast majority of users, the Core i5 is more than powerful enough and the cost savings may render it a more attractive option. Much of the same logic applies to the NVMe SSD (versus the conventional M.2 SATA option we saw in last month’s Latitude 7390 test unit) which is faster but also generates more heat and comes at a higher price. Most surprisingly, however, the anti-glare touchscreen in this configuration truly is anti-glare; it carries with it no negatives in comparison to last month’s conventional (non-touch) panel.

It’s certainly pricey, but there are few other laptops in its class as thoroughly impressive as the Latitude 7390.

The laundry list of pros still applies otherwise. The 7390 features flawless workmanship and a sturdy build while nevertheless managing a small footprint and light weight. Maintenance is easy thanks to the removable bottom cover. The thorough selection of ports and robust security options will be appreciated by business road warriors and corporate IT departments. The keyboard and touchpad on today’s review unit were both very good overall, and the display panel remains attractive despite the differences in components introduced by the touch capability. Finally, the device remains silent the vast majority of the time, and battery runtimes are lengthy. Cap it all off with a 3-year on-site warranty and you’ve got a very strong contender within the business segment.

At $2,197, it’s certainly pricey, but there are few other laptops in its class as thoroughly impressive as the Latitude 7390. Lenovo’s X1 Carbon and HP’s EliteBook Folio 1040 G4 are probably the top competitors—but it would be hard to go wrong with any one of these machines honestly.

Dell Latitude 7390 - 05/10/2018 v6
Steve Schardein

Chassis
87 / 98 → 88%
Keyboard
91%
Pointing Device
88%
Connectivity
63 / 80 → 79%
Weight
71 / 20-67 → 100%
Battery
94%
Display
91%
Games Performance
58 / 68 → 85%
Application Performance
94 / 92 → 100%
Temperature
91%
Noise
91%
Audio
44%
Camera
63 / 85 → 74%
Average
79%
90%
Office - Weighted Average

Pricecompare

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> Notebook / Laptop Reviews and News > Reviews > Dell Latitude 7390 (Core i7-8650U, Touchscreen) Laptop Review
Steve Schardein, 2018-05-20 (Update: 2018-05-22)
Steve Schardein
Steve Schardein - Review Editor - @othersteve
In grade school, my first computer—an Apple IIGS—started it all for me. Later, in the nineties, if I wasn’t repairing computers for family and friends, I was busy cooking up nifty Visual Basic projects and playing PC games like Command & Conquer and Heroes of Might and Magic. Soon, much of my free time was spent moderating popular gaming forums and covering the industry for various websites. All the while, I never stopped repairing computers, and in 2006, I started a technology consulting company in Louisville, KY—Triple-S Computers—which I have been fortunate to nurture to great success by specializing in not only repairs, but also new machine consultations and purchasing, data recovery, and malware/security. And since 2012, I have proudly contributed many dozens of reviews to Notebookcheck, a site which I have long considered to be the ultimate authority on laptops and related technology. Today, I am truly living my dream: still a child at heart, ever-curious, constantly learning, and thankful to you, our readers.