Notebookcheck

Dell Inspiron 15 7570 (i7-8550U, 940MX) Laptop Review

Christian Hintze (translated by Mark Riege), 11/14/2017

Top outside, top inside, but ... The new Dell aims to succeed with powerful and high-quality components. Will the all-rounder also convince us in the test and earn a purchase recommendation?

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At this point, there are numerous models from the Dell Inspiron 15 series: gaming notebooks with various Nvidia or AMD graphics cards, business models without a dedicated graphics card or with a smaller version, many different designs, etc. All are called "Inspiron 15," which can become confusing to the customer.

They are differentiated by the long number that follows the designation. Today we are testing the device with the long name "Dell Inspiron 15 7000 (7570-9726)." This is a business or all-round device with the new Kaby Lake processor and the GTX 940MX by Nvidia. (A similar model starts from $780 in the US.)

We are evaluating the new Inspiron, comparing it against the Asus VivoBook S15 S510UQ, the Acer TravelMate P658-G2, the Lenovo IdeaPad 510-15IKB, and the Huawei MateBook D. While all these models are also equipped with a GTX 940MX, their processors are different, even if they are always Kaby Lake CPUs. As the fifth comparison device, we have selected the Inspiron 15 5000 5567-1753 also from Dell. Even though it has an AMD GPU, its performance is at about the same level as that of the 940MX.

Dell Inspiron 15-7570 (Inspiron 15 Series)
Graphics adapter
NVIDIA GeForce 940MX - 4096 MB, Core: 1122 - 1242 MHz, Memory: 4000 MHz, GDDR5, 22.21.13.8178, Nvidia Optimus
Memory
8192 MB 
, 1 of 2 slots occupied
Display
15.6 inch 16:9, 1920x1080 pixel 141 PPI, BOE06B4, IPS, glossy: yes
Mainboard
Intel Kaby Lake-U + iHDCP 2.2 Premium PCH
Storage
Samsung PM961 NVMe MZVLW512HMJP, 512 GB 
, 420 GB free
Soundcard
Conexant CX20751/2 @ Intel Kaby Lake-U/Y - High Definition Audio Controller
Connections
4 USB 3.0 / 3.1 Gen1, 1 HDMI, 1 DisplayPort, 1 Kensington Lock, Audio Connections: headphone/microphone combo, Card Reader: SD
Networking
Realtek RTL8168/8111 Gigabit-LAN (10/100/1000MBit), Intel Dual Band Wireless-AC 7265 (a/b/g/h/n/ac), Bluetooth 4.2
Size
height x width x depth (in mm): 20 x 363 x 245 ( = 0.79 x 14.29 x 9.65 in)
Battery
42 Wh Lithium-Polymer, Battery runtime (according to manufacturer): 9 h
Operating System
Microsoft Windows 10 Home 64 Bit
Camera
Webcam: HD webcam
Primary Camera: 1.3 MPix
Additional features
Speakers: stereo, Keyboard: chiclet, Keyboard Light: yes, McAffee LifeSafe, 24 Months Warranty
Weight
1.995 kg ( = 70.37 oz / 4.4 pounds), Power Supply: 327 g ( = 11.53 oz / 0.72 pounds)
Price
1149 Euro

 

Case

According to the manufacturer, the case is made of aluminum with "glass-bead brilliance." Whether there are glass beads or not, the silver aluminum case provides good stability and a high-quality appearance to the new Inspiron. The design is kept nicely modest, only the reflective "Dell" logo stands out in the center of the top.

The bottom with the keyboard base is comfortably sturdy, and there are no creaks when pressing down on it. The same goes for the lid, although naturally it is not quite as robust. Because of the aluminum, it appears more resistant than some of the plastic competitors. The lid cannot be opened with one hand, due to the relatively light base and the stability of the hinges, which hold the display in position well.

The openings for the speakers are at the bottom in the front, and the fan vents are further back. The battery is built-in, and there is no maintenance hatch.

The gaps between the top holding the keyboard and the bottom edge are not always completely even. In some places, the gaps turn out slightly larger. However, the workmanship in our test unit leaves a good impression overall.

Behind the Huaweiour test unit is the smallest model, and the Asus has about the same size. These two competitors are also even slightly slimmer than the Dell. The Asus is also the lightest device, followed by the Huawei. Overall, the Inspiron achieves a good third place in terms of its size and weight. 

Size Comparison

Connections

The Inspiron offers all the usual connections. USB 2.0 is history, but unfortunately we are missing Thunderbolt 3. Instead, one of the USB-A ports offers support for PowerShare and the USB-C port supports DisplayPort. All the connections are on the sides of the notebook, most of them on the left. This is good for right-handed users, but not so good for left-handed ones. The distances between the ports are okay, but could have been even larger on the left side, since there is still plenty of space towards the front.

Left: power, USB-C 3.1 (with miniDP + power delivery), USB-A 3.1 Gen 1 (with PowerShare), USB-A 3.1 Gen 1, headphone/microphone
Left: power, USB-C 3.1 (with miniDP + power delivery), USB-A 3.1 Gen 1 (with PowerShare), USB-A 3.1 Gen 1, headphone/microphone
Right: SD-card reader, USB-A 3.1 Gen 1, LAN, Kensington
Right: SD-card reader, USB-A 3.1 Gen 1, LAN, Kensington
Front: status LED
Front: status LED
Back: fan vents
Back: fan vents

SD-Card Reader

We are testing the transfer speeds of the card reader with our Toshiba Exceria Pro SDXC 64 GB UHS-II reference storage card. Unfortunately, the standard device does not strike such a good figure. In the JPG-file copy test, only the sibling model does worse, and in the sequential read test, the Lenovo also joins this slow group. For comparison, the Acer, which ranked highest in both SD tests, performed 150 to 230% better than the Inspiron! 

SDCardreader Transfer Speed
average JPG Copy Test (av. of 3 runs)
Acer TravelMate P658-G2-MG-7327
(Toshiba Exceria Pro SDXC 64 GB UHS-II)
88.1 MB/s ∼100% +232%
Lenovo IdeaPad 510-15IKB 80SV0087GE
(Toshiba Exceria Pro SDXC 64 GB UHS-II)
59 MB/s ∼67% +123%
Asus Vivobook S15 S510UQ-BQ189T
(Toshiba Exceria Pro SDXC 64 GB UHS-II)
33.9 MB/s ∼38% +28%
Dell Inspiron 15-7570
(Toshiba Exceria Pro SDXC 64 GB UHS-II)
26.5 MB/s ∼30%
Dell Inspiron 15 5000 5567-1753
(Toshiba Exceria Pro SDXC 64 GB UHS-II)
23.2 MB/s ∼26% -12%
maximum AS SSD Seq Read Test (1GB)
Acer TravelMate P658-G2-MG-7327
(Toshiba Exceria Pro SDXC 64 GB UHS-II)
77.8 MB/s ∼100% +154%
Asus Vivobook S15 S510UQ-BQ189T
(Toshiba Exceria Pro SDXC 64 GB UHS-II)
37.4 MB/s ∼48% +22%
Dell Inspiron 15-7570
(Toshiba Exceria Pro SDXC 64 GB UHS-II)
30.6 MB/s ∼39%
Dell Inspiron 15 5000 5567-1753
(Toshiba Exceria Pro SDXC 64 GB UHS-II)
27.5 MB/s ∼35% -10%
Lenovo IdeaPad 510-15IKB 80SV0087GE
(Toshiba Exceria Pro SDXC 64 GB UHS-II)
24.9 MB/s ∼32% -19%

Communication

Things look much better in the test of the communication module. Our test unit achieved second place during sending as well as receiving. Only the Huawei and the Asus are similarly fast here.

Networking
iperf3 Client (receive) TCP 1 m 4M x10
Huawei MateBook D
Intel 8265 Tri-Band WiFi (Oak Peak) Network Adapter
670 MBit/s ∼100% +29%
Dell Inspiron 15-7570
Intel Dual Band Wireless-AC 7265
518 MBit/s ∼77%
Asus Vivobook S15 S510UQ-BQ189T
Intel Dual Band Wireless-AC 8265
510 MBit/s ∼76% -2%
Acer TravelMate P658-G2-MG-7327
Intel Dual Band Wireless-AC 7265
377 MBit/s ∼56% -27%
Dell Inspiron 15 5000 5567-1753
Intel Dual Band Wireless-AC 3165
350 MBit/s ∼52% -32%
iperf3 Client (transmit) TCP 1 m 4M x10
Asus Vivobook S15 S510UQ-BQ189T
Intel Dual Band Wireless-AC 8265
668 MBit/s ∼100% +8%
Dell Inspiron 15-7570
Intel Dual Band Wireless-AC 7265
617 MBit/s ∼92%
Huawei MateBook D
Intel 8265 Tri-Band WiFi (Oak Peak) Network Adapter
534 MBit/s ∼80% -13%
Dell Inspiron 15 5000 5567-1753
Intel Dual Band Wireless-AC 3165
319 MBit/s ∼48% -48%
Acer TravelMate P658-G2-MG-7327
Intel Dual Band Wireless-AC 7265
34 MBit/s ∼5% -94%

Security

Apart from a Kensington security lock, we did not see any other security features.

Accessories

The manufacturer is stingy in terms of accessories, and apart from a quick-start manual and a warranty card, there is nothing else in the box of the Inspiron 15. However, Dell offers a range of external accessories, such as bags, docking stations, additional batteries, optical drives, and more. None of these accessories are exclusive to this model, so we are not including them in our testing. Dell's website offers further information.

Maintenance

The insides
The insides

The Inspiron does not have a maintenance hatch, but you can remove the entire base plate. In order to do this, you have to first remove 10 visible screws. Afterwards, it is not that easy to find a point of leverage to remove the bottom. The best place is at the back, in the center between the two hinges. After loosening and taking off the bottom, you get access to the RAM slots, the battery, the SSD, and the empty SATA slot, as well as the fan. 

Warranty

The manufacturer offers a two-year warranty.

Input Devices

Keyboard

Small Enter and arrow keys
Small Enter and arrow keys

The 15 x 15 mm (~0.6 x 0.6 in) keys offer a comfortable keystroke. Typing with them is simple and straightforward, and the typing noise is also okay. Moreover, the layout is extremely clean, and there is plenty of space for all the keys. However, this is due to the fact that there is no number pad. In a 15-inch device which is advertised as a business or all-round device, we would have really liked a number pad, since it makes a lot of tasks easier. Despite the ample amount of space, the Shift, Enter, and particularly the arrow keys are smaller than usual. 

The mapping of the function keys is unusual, since their default is set to the special functions. For example, pressing F5 does not reload a website, but triggers the special media function of the key (Play/Pause). However, Dell is not consistent here - that would be impractical - but some keys do  the opposite (for example F4). Since there is no additional labeling, you have to find out by trial and error.

You can optionally illuminate the keyboard in a single color and two steps of brightness, although the  difference between them is very slight.

The keyboard
The keyboard
Illumination in the dark
Illumination in the dark

Touchpad

The touchpad
The touchpad

The touchpad has a good size (105 x 81 mm/~4.1 x 3.2 in), reacts accurately, and offers a pleasing sliding characteristic. The key area also reacts reliably, but the clicking noises could have been quieter. Multi-touch gestures were also recognized in the test without any problems. Dragging and swiping actions worked with up to four fingers. 

Display

Subpixel grid
Subpixel grid
Slight screen bleeding at the top right corner
Slight screen bleeding at the top right corner

In our test unit, Dell has used a 15-inch Full HD IPS panel made by BOE. Optionally, you can also get a (much more expensive) version with a 4K UHD display including the touch function. While the display used is convincing in many respects, it also has two or three weaknesses. Probably the biggest weakness of the display is the relatively low average brightness of 240 cd/m. With the exception of the mediocre TN panel of the sibling model, this is the worst value in the comparison. However, at a maximum of 275 cd/m2 the competitors are not much better either. In addition, the display of the new Inspiron is also reflective. The combination of the barely acceptable brightness and reflective surface creates some doubts as to the outdoor suitability of the device. But more on this later. 

At 91%, the brightness distribution turns out very strong, so the brightness is distributed very evenly across the display. As typical for IPS displays, we also noticed some slight screen bleeding. This was mainly in the top right corner visible in very dark scenes and that only when you were looking for it. 

243
cd/m²
231
cd/m²
236
cd/m²
239
cd/m²
255
cd/m²
232
cd/m²
240
cd/m²
243
cd/m²
237
cd/m²
Distribution of brightness
X-Rite i1Pro 2
Maximum: 255 cd/m² Average: 239.6 cd/m² Minimum: 18.2 cd/m²
Brightness Distribution: 91 %
Center on Battery: 255 cd/m²
Contrast: 1594:1 (Black: 0.16 cd/m²)
ΔE Color 4.74 | - Ø
ΔE Greyscale 3.44 | - Ø
60% sRGB (Argyll) 38% AdobeRGB 1998 (Argyll)
Gamma: 2.43
Dell Inspiron 15-7570
BOE06B4, , 1920x1080, 15.6
Asus Vivobook S15 S510UQ-BQ189T
AU Optronics B156W02 / AUO B156HAN02.1, , 1920x1080, 15.6
Acer TravelMate P658-G2-MG-7327
LG Philips LP156WF6-SPP1, , 1920x1080, 15.6
Lenovo IdeaPad 510-15IKB 80SV0087GE
BOE HF NV156FHM-N42, , 1920x1080, 15.6
Huawei MateBook D
BOE070C, , 1920x1080, 15.6
Dell Inspiron 15 5000 5567-1753
BOE NT15N41, , 1920x1080, 15.6
Response Times
6%
680%
-41%
671%
31%
Response Time Grey 50% / Grey 80% *
45 (23, 22)
47 (21, 26)
-4%
38 (20, 18)
16%
51 (18, 33)
-13%
46.4 (23.2, 23.2)
-3%
43 (18, 25)
4%
Response Time Black / White *
33 (18, 15)
28 (16, 12)
15%
28 (17, 11)
15%
38 (8, 30)
-15%
36.8 (22.4, 14.4)
-12%
14 (6, 8)
58%
PWM Frequency
996 (90)
21000 (90)
2008%
50 (10)
-95%
21190
2028%
Screen
-4%
-1%
-6%
-34%
-87%
Brightness
240
275
15%
276
15%
265
10%
258
8%
144
-40%
Brightness Distribution
91
86
-5%
82
-10%
86
-5%
92
1%
90
-1%
Black Level *
0.16
0.25
-56%
0.295
-84%
0.23
-44%
0.47
-194%
0.49
-206%
Contrast
1594
1172
-26%
963
-40%
1265
-21%
570
-64%
296
-81%
Colorchecker DeltaE2000 *
4.74
3.81
20%
4.07
14%
4.78
-1%
5.7
-20%
9.27
-96%
Greyscale DeltaE2000 *
3.44
2.66
23%
3.13
9%
3.49
-1%
4.2
-22%
12.28
-257%
Gamma
2.43 99%
2.54 94%
2.41 100%
2.58 93%
2.3 104%
2.03 118%
CCT
7064 92%
6541 99%
7082 92%
6013 108%
6820 95%
10732 61%
Color Space (Percent of AdobeRGB 1998)
38
37
-3%
56
47%
40
5%
43.2
14%
35
-8%
Color Space (Percent of sRGB)
60
58
-3%
86
43%
64
7%
61.5
3%
55
-8%
Total Average (Program / Settings)
1% / -2%
340% / 185%
-24% / -16%
319% / 158%
-28% / -64%

* ... smaller is better

In many other measurements, the panel is convincing. This is the case particularly for the very good contrast (1594:1) and black value (0.16). Both values are the best of the direct comparison and ensure that the display is also very pleasing subjectively. The impression of the very good contrast and saturated black is even more emphasized by the reflective screen, which makes the colors appear even more saturated, at least indoors. The color deviations and the grayscales are also in the acceptable range.

CalMAN ColorChecker
CalMAN ColorChecker
CalMAN, Grayscales
CalMAN, Grayscales
CalMAN, Saturation
CalMAN, Saturation

The panel is obviously using PWM for brightness control. The technology is used from a brightness of 90% and lower at a frequency of 996 Hz, which should be sufficiently high to not be noticeable even by sensitive people.

Even though the color space coverage is only important for (semi-) professional users, it should be mentioned. At 60% sRGB and 38% AdobeRGB, this is not particularly high, but almost all of the direct competitors have similar values. Only the Asus can do better here (86% and 56%). Subjectively, we liked the display very much overall, and only the mediocre brightness marred the impression slightly.

sRGB coverage: 60%
sRGB coverage: 60%
AdobeRGB coverage: 38%
AdobeRGB coverage: 38%
Outdoors on a cloudy day
Outdoors on a cloudy day

Since this year’s end of October and beginning of November were not blessed by much sun, we were only able to test the outdoor suitability of the Inspiron 15 on a cloudy day. Despite the reflective screen and only mediocre brightness, it fared surprisingly well, which is mainly due to the strong contrast and excellent black value. But of course, you still have to live with the reflections. However, even then the display contents remain surprisingly visible. However, in direct sunlight the visibility will be reduced further.

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
33 ms ... rise ↗ and fall ↘ combined↗ 18 ms rise
↘ 15 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. » 83 % of all devices are better.
This means that the measured response time is worse than the average of all tested devices (26.6 ms).
       Response Time 50% Grey to 80% Grey
45 ms ... rise ↗ and fall ↘ combined↗ 23 ms rise
↘ 22 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. » 67 % of all devices are better.
This means that the measured response time is similar to the average of all tested devices (42.5 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 detected 996 Hz90 % brightness setting

The display backlight flickers at 996 Hz (Likely utilizing PWM) Flickering detected at a brightness setting of 90 % and below. There should be no flickering or PWM above this brightness setting.

The frequency of 996 Hz is quite high, so most users sensitive to PWM should not notice any flickering.

In comparison: 55 % of all tested devices do not use PWM to dim the display. If PWM was detected, an average of 8506 (minimum: 43 - maximum: 142900) Hz was measured.

Despite the reflective display, the viewing angle stability is very good, at least indoors. Outdoors, reflections will probably interfere with the view of the contents. The image below shows the display from various viewing angles of about 45 degrees.

Viewing angles
Viewing angles

Performance

Observed latencies
Observed latencies

The equipment of the Inspiron 15 combines an Intel Core i7-8550U with an Nvidia GeForce 940MX, 8 GB of working memory, and a potentially fast SSD from Samsung. With these performance characteristics, the device targets mainly business and office users, graphics editors, and also video editors. However, this notebook is not really recommended to gamers since the built-in graphics are too weak. 

In the test, the LatencyMon tool showed latencies and the risk of drop outs while playing real-time audio and other applications. A BIOS update is recommended, the Performance power profile was selected, and throttling was not set.

 

Processor

The Intel Core i7-8550U is an energy-efficient processor of the Kaby-Lake-refresh generation. The power consumption is only 15 watts. Thanks to Hyperthreading, its four cores are able to run two threads each. They have a very variable clock speed of 1.8 to 4 GHz. The decisive factor is the cooling system and notebook configuration, determining whether the CPU can use its full performance potential or it is throttled because of high temperatures. 

In our 30-minute Cinebench loop, the typical behavior of the ultra-efficient CPU is showing. After the first, strong run, the values decline in the second run and then level off. For a short time, the CPU can get up to 44 watts, which means that the first run is not really representative. The outliers downwards trend without an external cause is striking. Perhaps there are some specific background processes that interfere with the performance, but we do not know the real reason.

The values that the sensors report via HWiNFO are also surprising. By just starting Cinebench, the core temperature jumps from 50 - 70 °C (~122 - ~158 °F) up to 98 °C (~208 °F) for a brief time, before they lower again to 71 °C (~160 °F). Such a sudden temperature change is not very likely, so we must question the information of the sensors on the core temperature.

In battery mode, the clock speed is 3.4 to 3.5 GHz on average. Away from the outlet, these values are decent. However, they also vary. If you run only the multi-core test, they barely average out at 2.4 GHz. In this way, the notebook achieves a value of about 526 points from the second run on. Compared to the 565 points when plugged in, this is only a slight throttling of about 7%.

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Cinebench R15 CPU Multi 64 Bit

The performance comparison to the other notebooks is a bit difficult here, since they are using the weaker Core i7-7500U predecessor CPU, and the Asus  has just an i7-7200U. The predecessor series has only two real computing cores and can therefore only operate on half the amount of threads. Accordingly, it is not very surprising that the Inspiron 15 7570 comes out on top in the Cinebench tests. The differences are relatively constant across all Cinebench versions: in the single-core test our test unit mostly leads by 12% at least, and in the multi-core test it is even ahead of the rest of the devices by at least 40%. 

For a better comparison of the processor, we also use the Acer Aspire 5 A517-51G and the Acer Swift 3, which have the same CPU as the Inspiron 15, but a different graphics card, and their sizes are also different (17-inch and 14-inch). Apparently the relatively new CPU has not been used much in 15-inch notebooks of the same price range until now. In the comparison, the three devices produce very similar results, so the CPU-performance of the Inspiron 15 lies within the expected range. You can find more information and benchmark results in our database on the i7-8550U.

Cinebench R15
Cinebench R15
Cinebench R11.5
Cinebench R11.5
Cinebench R10
Cinebench R10
Cinebench R15
CPU Single 64Bit
Acer Aspire 5 A517-51G-80L
Intel Core i7-8550U
171 Points ∼100% +1%
Dell Inspiron 15-7570
Intel Core i7-8550U
170 Points ∼99%
Acer Swift 3 SF314-52G-89SL
Intel Core i7-8550U
167 Points ∼98% -2%
Huawei MateBook D
Intel Core i7-7500U
149 Points ∼87% -12%
Lenovo IdeaPad 510-15IKB 80SV0087GE
Intel Core i7-7500U
148 Points ∼87% -13%
Acer TravelMate P658-G2-MG-7327
Intel Core i7-7500U
147 Points ∼86% -14%
CPU Multi 64Bit
Acer Aspire 5 A517-51G-80L
Intel Core i7-8550U
585 Points ∼100% +4%
Dell Inspiron 15-7570
Intel Core i7-8550U
565 Points ∼97%
Acer Swift 3 SF314-52G-89SL
Intel Core i7-8550U
550 Points ∼94% -3%
Acer TravelMate P658-G2-MG-7327
Intel Core i7-7500U
376 Points ∼64% -33%
Huawei MateBook D
Intel Core i7-7500U
343 Points ∼59% -39%
Lenovo IdeaPad 510-15IKB 80SV0087GE
Intel Core i7-7500U
338 Points ∼58% -40%
Cinebench R11.5
CPU Single 64Bit
Acer Aspire 5 A517-51G-80L
Intel Core i7-8550U
1.95 Points ∼100% +1%
Dell Inspiron 15-7570
Intel Core i7-8550U
1.93 Points ∼99%
Huawei MateBook D
Intel Core i7-7500U
1.69 Points ∼87% -12%
CPU Multi 64Bit
Dell Inspiron 15-7570
Intel Core i7-8550U
7.01 Points ∼100%
Acer Aspire 5 A517-51G-80L
Intel Core i7-8550U
6.44 Points ∼92% -8%
Huawei MateBook D
Intel Core i7-7500U
3.84 Points ∼55% -45%
Cinebench R10
Rendering Single CPUs 64Bit
Acer Aspire 5 A517-51G-80L
Intel Core i7-8550U
8426 Points ∼100% +1%
Dell Inspiron 15-7570
Intel Core i7-8550U
8382 Points ∼99%
Rendering Multiple CPUs 64Bit
Dell Inspiron 15-7570
Intel Core i7-8550U
25854 Points ∼100%
Acer Aspire 5 A517-51G-80L
Intel Core i7-8550U
25544 Points ∼99% -1%
Cinebench R10 Shading 64Bit
6840 Points
Cinebench R10 Rendering Multiple CPUs 64Bit
25854 Points
Cinebench R10 Rendering Single CPUs 64Bit
8382 Points
Cinebench R11.5 CPU Multi 64Bit
7.01 Points
Cinebench R11.5 OpenGL 64Bit
70.02 fps
Cinebench R11.5 CPU Single 64Bit
1.93 Points
Cinebench R15 CPU Single 64Bit
170 Points
Cinebench R15 Ref. Match 64Bit
99.6 %
Cinebench R15 OpenGL 64Bit
81.02 fps
Cinebench R15 CPU Multi 64Bit
565 Points
Help

System Performance

In order to evaluate the system performance via PCMark 8, we are using the two additional Acer models with the same CPU for comparison. To avoid the comparison becoming too large, we are leaving out the Acer TravelMate and the Dell sibling model. The results show that the three devices with the better CPU cannot really break away from the rest of the field. Only the Asus is always 8 to 10% behind the rest. Despite having only two cores, the Huawei is able to keep up well against the Inspiron 15 and is almost at the same level. The Acer Swift 3 and the Aspire 5 are almost 4 to 5% ahead of the Inspiron. However, in practice the slight advantage should not be very noticeable. 

PCMark 8 Home Score
PCMark 8 Home Score
PCMark 8 Work Score
PCMark 8 Work Score
PCMark 10
PCMark 10
PCMark 8
Work Score Accelerated v2
Acer Aspire 5 A517-51G-80L
GeForce MX150, 8550U, Micron 1100 MTFDDAV256TBN
5193 Points ∼100% +4%
Dell Inspiron 15-7570
GeForce 940MX, 8550U, Samsung PM961 NVMe MZVLW512HMJP
4987 Points ∼96%
Huawei MateBook D
GeForce 940MX, 7500U, SanDisk SD8SN8U128G1027
4860 Points ∼94% -3%
Asus Vivobook S15 S510UQ-BQ189T
GeForce 940MX, 7200U, Toshiba SG5 THNSNK128GVN8
4483 Points ∼86% -10%
Home Score Accelerated v2
Acer Swift 3 SF314-52G-89SL
GeForce MX150, 8550U, Intel SSD 600p SSDPEKKW512G7
3968 Points ∼100% +5%
Acer Aspire 5 A517-51G-80L
GeForce MX150, 8550U, Micron 1100 MTFDDAV256TBN
3910 Points ∼99% +3%
Lenovo IdeaPad 510-15IKB 80SV0087GE
GeForce 940MX, 7500U, Liteonit CV3-DE256
3778 Points ∼95% 0%
Dell Inspiron 15-7570
GeForce 940MX, 8550U, Samsung PM961 NVMe MZVLW512HMJP
3778 Points ∼95%
Huawei MateBook D
GeForce 940MX, 7500U, SanDisk SD8SN8U128G1027
3721 Points ∼94% -2%
Asus Vivobook S15 S510UQ-BQ189T
GeForce 940MX, 7200U, Toshiba SG5 THNSNK128GVN8
3468 Points ∼87% -8%
PCMark 8 Home Score Accelerated v2
3778 points
PCMark 8 Work Score Accelerated v2
4987 points
Help

Storage Solution

A 512 GB Samsung PM961 SSD is used as the main storage. In our benchmark list, this model is one of the fastest SSDs ever, leading our list. Our measurements confirm the good performance of the NVMe disk; it is by far the best storage medium in the direct comparison with the competitors. So it is even more surprising that the Inspiron 15 was unable to gain more of an advantage in the system performance via PCMark. Perhaps the very variable clock speed of the CPU is responsible, since it can only rarely use its full potential (see Cinebench loop above).

Dell Inspiron 15-7570
Samsung PM961 NVMe MZVLW512HMJP
Asus Vivobook S15 S510UQ-BQ189T
Toshiba SG5 THNSNK128GVN8
Acer TravelMate P658-G2-MG-7327
Liteonit CV3-8D512
Lenovo IdeaPad 510-15IKB 80SV0087GE
Liteonit CV3-DE256
Huawei MateBook D
SanDisk SD8SN8U128G1027
Dell Inspiron 15 5000 5567-1753
SanDisk X400 SED 256GB, SATA (SD8TB8U-256G)
CrystalDiskMark 3.0
-66%
-58%
-54%
-56%
-55%
Write 4k QD32
510
121.8
-76%
248.8
-51%
245.9
-52%
123.2
-76%
239.6
-53%
Read 4k QD32
404.2
279.1
-31%
354.8
-12%
364.7
-10%
368.5
-9%
285.2
-29%
Write 4k
135
86.19
-36%
68.78
-49%
66.8
-51%
82.72
-39%
55.87
-59%
Read 4k
52.08
16.05
-69%
25.74
-51%
28.68
-45%
36.84
-29%
29.25
-44%
Write 512
1038
138.2
-87%
246.3
-76%
297.9
-71%
181.4
-83%
385.7
-63%
Read 512
1076
368.6
-66%
227.1
-79%
338.3
-69%
331.2
-69%
382.8
-64%
Write Seq
1015
138.6
-86%
256.9
-75%
431.5
-57%
314.9
-69%
458.1
-55%
Read Seq
2013
437.6
-78%
526.3
-74%
469.2
-77%
478.4
-76%
502.2
-75%
Samsung PM961 NVMe MZVLW512HMJP
Sequential Read: 2013 MB/s
Sequential Write: 1015 MB/s
512K Read: 1076 MB/s
512K Write: 1038 MB/s
4K Read: 52.08 MB/s
4K Write: 135 MB/s
4K QD32 Read: 404.2 MB/s
4K QD32 Write: 510 MB/s

Graphics Card

The built-in graphics card is an Nvidia GeForce 940MX. There are at least two versions of this, and fortunately Dell is using the faster variant with GDDR5 storage (4 GB). This leads to the card having about a 25% advantage to the version with GDDR3 storage. But there are also two different versions of the model with GDDR5 storage. Whereas this is a model with 384 shaders, there is also supposed to be a version with 512 shaders, which has a slightly slower clock speed instead. You can find additional information on this on our special page for the model.

It will probably display the current games smoothly only in low to medium details at resolutions of around 1366x768. Thus the Inspiron 15 is suitable for the occasional gamer at most, but the real usage area is rather in the office or to edit photos and videos. 

The Huawei is on top in all three 3DMark tests. While the Huawei also has a 940MX GPU with GDDR5 storage, the Mate model has only 2 GB of video storage. The shader amount should also be similar, so the advantage of 10% (Cloud Gate) and 29 % (Fire Strike) is surprising. At least in 3DMark 11, the Inspiron can achieve second place behind the Huawei. In Fire Strike it is only enough for third place, since even the Asus is 9% faster here. Apparently, even during regular operation the graphics of the Inspiron are throttled slightly.

In battery operation, the Fire Strike benchmark does not run during our first attempt, but at the second attempt it works. The result is not much different from that in mains operation, so there is no throttling.

PCMark 2013 Fire Strike
PCMark 2013 Fire Strike
PCMark 2013 Cloud Gate
PCMark 2013 Cloud Gate
3DMark 11
3DMark 11
3DMark 11 - 1280x720 Performance GPU
Huawei MateBook D
NVIDIA GeForce 940MX, Intel Core i7-7500U
2910 Points ∼100% +4%
Dell Inspiron 15-7570
NVIDIA GeForce 940MX, Intel Core i7-8550U
2802 Points ∼96%
Asus Vivobook S15 S510UQ-BQ189T
NVIDIA GeForce 940MX, Intel Core i5-7200U
2689 Points ∼92% -4%
Acer TravelMate P658-G2-MG-7327
NVIDIA GeForce 940MX, Intel Core i7-7500U
2556 Points ∼88% -9%
Lenovo IdeaPad 510-15IKB 80SV0087GE
NVIDIA GeForce 940MX, Intel Core i7-7500U
2436 Points ∼84% -13%
Dell Inspiron 15 5000 5567-1753
AMD Radeon R7 M445, Intel Core i7-7500U
2208 Points ∼76% -21%
3DMark
1920x1080 Fire Strike Graphics
Huawei MateBook D
NVIDIA GeForce 940MX, Intel Core i7-7500U
2376 Points ∼100% +19%
Asus Vivobook S15 S510UQ-BQ189T
NVIDIA GeForce 940MX, Intel Core i5-7200U
2158 Points ∼91% +8%
Dell Inspiron 15-7570
NVIDIA GeForce 940MX, Intel Core i7-8550U
1996 Points ∼84%
Dell Inspiron 15 5000 5567-1753
AMD Radeon R7 M445, Intel Core i7-7500U
1579 Points ∼66% -21%
1280x720 Cloud Gate Standard Graphics
Huawei MateBook D
NVIDIA GeForce 940MX, Intel Core i7-7500U
13199 Points ∼100% +10%
Asus Vivobook S15 S510UQ-BQ189T
NVIDIA GeForce 940MX, Intel Core i5-7200U
11986 Points ∼91% 0%
Dell Inspiron 15-7570
NVIDIA GeForce 940MX, Intel Core i7-8550U
11973 Points ∼91%
Dell Inspiron 15 5000 5567-1753
AMD Radeon R7 M445, Intel Core i7-7500U
9617 Points ∼73% -20%
3DMark 11 Performance
3065 points
3DMark Cloud Gate Standard Score
10661 points
3DMark Fire Strike Score
1898 points
Help

Gaming Performance

As already mentioned, the 940MX is not suitable for serious gaming. While it offers slightly more performance than the integrated graphics unit, and both can be switched via Nvidia Optimus, the current games are not very enjoyable in minimum detail. You can see in the benchmark results that the graphic performance is quite reduced, since the competing models with the same card achieve higher frame rates.

For example, even in the lowest resolution and the lowest details, it cannot really display "The Witcher 3" smoothly. The Inspiron 15 7570 achieves 26 FPS on average in these settings. Anything more than that is not playable anyway. Normally notebooks with the 940MX reach about 35 FPS here, so the performance is throttled.

At least you can play "Rise of the Tomb Raider" smoothly in the minimum settings, but is there anyone who wants to do this? Even in medium settings, Lara moves only at a snail's pace.

Even at its lowest settings, "Doom" became a benchmark torture for the tester. About 14 FPS in the minimum configuration is not comfortable to test, but the device is not really a gaming but rather a business model. Normally "Doom" is less demanding than "The Witcher 3." Since notebooks with the 940MX normally achieve about 39 FPS and "Doom" is our last game of the test series, we definitely saw additional throttling over time here.

The general throttling of the graphics performance and the additional throttling over time have a negative effect on the comparison with the competitors. Most of the time, the Inspiron 15 can be found in one of the last places, and the Huawei and the Asus mostly fare much better. But the results in the other models are also quite variable, depending on the resolution and details.

Finally, we have to negate the gaming suitability of the Inspiron 15 7570. While it might still be enough for a game of "Rocket League" or one of the older "FIFA" games in much reduced settings, the device does not have sufficient power for the current, demanding games. But this is Dell's fault, since the graphics card should at least do a little better and enable playing games in the lowest settings. However, the performance is throttled considerably at times.

The Witcher 3
1920x1080 Ultra Graphics & Postprocessing (HBAO+)
Dell Inspiron 15-7570
GeForce 940MX, 8550U, Samsung PM961 NVMe MZVLW512HMJP
7.12 fps ∼100%
Huawei MateBook D
GeForce 940MX, 7500U, SanDisk SD8SN8U128G1027
7.1 fps ∼100% 0%
Dell Inspiron 15 5000 5567-1753
Radeon R7 M445, 7500U, SanDisk X400 SED 256GB, SATA (SD8TB8U-256G)
4.7 fps ∼66% -34%
1920x1080 High Graphics & Postprocessing (Nvidia HairWorks Off)
Huawei MateBook D
GeForce 940MX, 7500U, SanDisk SD8SN8U128G1027
14 fps ∼100% +32%
Dell Inspiron 15-7570
GeForce 940MX, 8550U, Samsung PM961 NVMe MZVLW512HMJP
10.64 fps ∼76%
Dell Inspiron 15 5000 5567-1753
Radeon R7 M445, 7500U, SanDisk X400 SED 256GB, SATA (SD8TB8U-256G)
9.6 fps ∼69% -10%
1366x768 Medium Graphics & Postprocessing
Asus Vivobook S15 S510UQ-BQ189T
GeForce 940MX, 7200U, Toshiba SG5 THNSNK128GVN8
25.4 fps ∼100% +14%
Huawei MateBook D
GeForce 940MX, 7500U, SanDisk SD8SN8U128G1027
23.6 fps ∼93% +6%
Dell Inspiron 15-7570
GeForce 940MX, 8550U, Samsung PM961 NVMe MZVLW512HMJP
22.22 fps ∼87%
Dell Inspiron 15 5000 5567-1753
Radeon R7 M445, 7500U, SanDisk X400 SED 256GB, SATA (SD8TB8U-256G)
18.2 fps ∼72% -18%
1024x768 Low Graphics & Postprocessing
Asus Vivobook S15 S510UQ-BQ189T
GeForce 940MX, 7200U, Toshiba SG5 THNSNK128GVN8
41.4 fps ∼100% +57%
Huawei MateBook D
GeForce 940MX, 7500U, SanDisk SD8SN8U128G1027
35.3 fps ∼85% +34%
Dell Inspiron 15 5000 5567-1753
Radeon R7 M445, 7500U, SanDisk X400 SED 256GB, SATA (SD8TB8U-256G)
30.8 fps ∼74% +17%
Dell Inspiron 15-7570
GeForce 940MX, 8550U, Samsung PM961 NVMe MZVLW512HMJP
26.34 fps ∼64%
Rise of the Tomb Raider
1920x1080 Very High Preset AA:FX AF:16x
Huawei MateBook D
GeForce 940MX, 7500U, SanDisk SD8SN8U128G1027
11.6 fps ∼100% +36%
Dell Inspiron 15-7570
GeForce 940MX, 8550U, Samsung PM961 NVMe MZVLW512HMJP
8.55 fps ∼74%
Dell Inspiron 15 5000 5567-1753
Radeon R7 M445, 7500U, SanDisk X400 SED 256GB, SATA (SD8TB8U-256G)
6.7 (min: 5) fps ∼58% -22%
1920x1080 High Preset AA:FX AF:4x
Huawei MateBook D
GeForce 940MX, 7500U, SanDisk SD8SN8U128G1027
13.9 fps ∼100% +34%
Dell Inspiron 15-7570
GeForce 940MX, 8550U, Samsung PM961 NVMe MZVLW512HMJP
10.39 fps ∼75%
Dell Inspiron 15 5000 5567-1753
Radeon R7 M445, 7500U, SanDisk X400 SED 256GB, SATA (SD8TB8U-256G)
8.5 (min: 7) fps ∼61% -18%
1366x768 Medium Preset AF:2x
Asus Vivobook S15 S510UQ-BQ189T
GeForce 940MX, 7200U, Toshiba SG5 THNSNK128GVN8
26.1 fps ∼100% +95%
Huawei MateBook D
GeForce 940MX, 7500U, SanDisk SD8SN8U128G1027
26 fps ∼100% +94%
Dell Inspiron 15 5000 5567-1753
Radeon R7 M445, 7500U, SanDisk X400 SED 256GB, SATA (SD8TB8U-256G)
15.1 (min: 14) fps ∼58% +13%
Dell Inspiron 15-7570
GeForce 940MX, 8550U, Samsung PM961 NVMe MZVLW512HMJP
13.39 fps ∼51%
1024x768 Lowest Preset
Asus Vivobook S15 S510UQ-BQ189T
GeForce 940MX, 7200U, Toshiba SG5 THNSNK128GVN8
46.9 fps ∼100% +31%
Dell Inspiron 15-7570
GeForce 940MX, 8550U, Samsung PM961 NVMe MZVLW512HMJP
35.9 fps ∼77%
Dell Inspiron 15 5000 5567-1753
Radeon R7 M445, 7500U, SanDisk X400 SED 256GB, SATA (SD8TB8U-256G)
29.6 (min: 27) fps ∼63% -18%
Huawei MateBook D
GeForce 940MX, 7500U, SanDisk SD8SN8U128G1027
29 fps ∼62% -19%
Doom
1920x1080 High Preset AA:FX
Dell Inspiron 15 5000 5567-1753
Radeon R7 M445, 7500U, SanDisk X400 SED 256GB, SATA (SD8TB8U-256G)
14 fps ∼100% +107%
Dell Inspiron 15-7570
GeForce 940MX, 8550U, Samsung PM961 NVMe MZVLW512HMJP
6.76 fps ∼48%
1366x768 Medium Preset
Dell Inspiron 15 5000 5567-1753
Radeon R7 M445, 7500U, SanDisk X400 SED 256GB, SATA (SD8TB8U-256G)
28 fps ∼100% +147%
Dell Inspiron 15-7570
GeForce 940MX, 8550U, Samsung PM961 NVMe MZVLW512HMJP
11.32 fps ∼40%
1280x720 Low Preset
Dell Inspiron 15 5000 5567-1753
Radeon R7 M445, 7500U, SanDisk X400 SED 256GB, SATA (SD8TB8U-256G)
35 fps ∼100% +154%
Dell Inspiron 15-7570
GeForce 940MX, 8550U, Samsung PM961 NVMe MZVLW512HMJP
13.78 fps ∼39%
low med. high ultra
The Witcher 3 (2015) 26.3422.2210.647.12fps
Rise of the Tomb Raider (2016) 35.913.3910.398.55fps
Doom (2016) 13.7811.326.76fps

Emissions

Noise Emissions

According to the measurements, the noise development of the Dell Inspiron 7570 is quite decent, particularly during idle. In parts, the fans are completely deactivated when there is no load, and the device is silent. But the rest of the competitors also produce around 30 dB(A) during idle, and only the Lenovo is louder here. However, from time to time the fans also start during idle, revving up to be quite loud for a short moment, before they go back to being quieter. The revving occurs without any discernible change in the load. 

Unfortunately, under load, the test unit cannot quite keep up with most of the rivals in the comparison anymore and becomes quite loud at around 43 dB(A). The Asus is similarly loud, but the rest of the competitors remain mostly around 38 dB(A). At about 42 dB(A), the sibling model is just slightly quieter. Unfortunately, the fans also emit a high-frequency noise during operation.

Dell Inspiron 15-7570
GeForce 940MX, 8550U, Samsung PM961 NVMe MZVLW512HMJP
Asus Vivobook S15 S510UQ-BQ189T
GeForce 940MX, 7200U, Toshiba SG5 THNSNK128GVN8
Acer TravelMate P658-G2-MG-7327
GeForce 940MX, 7500U, Liteonit CV3-8D512
Lenovo IdeaPad 510-15IKB 80SV0087GE
GeForce 940MX, 7500U, Liteonit CV3-DE256
Huawei MateBook D
GeForce 940MX, 7500U, SanDisk SD8SN8U128G1027
Dell Inspiron 15 5000 5567-1753
Radeon R7 M445, 7500U, SanDisk X400 SED 256GB, SATA (SD8TB8U-256G)
Noise
-2%
5%
0%
4%
0%
off / environment *
30.3
30.6
-1%
30
1%
31.6
-4%
28.8
5%
30.6
-1%
Idle Minimum *
30.3
31.2
-3%
30
1%
32.6
-8%
30
1%
30.6
-1%
Idle Average *
30.3
31.2
-3%
30
1%
32.6
-8%
30.2
-0%
30.6
-1%
Idle Maximum *
30.3
31.2
-3%
30
1%
32.6
-8%
30.2
-0%
30.6
-1%
Load Average *
42.6
43.3
-2%
37.3
12%
35.3
17%
39
8%
41.9
2%
Load Maximum *
42.5
43.3
-2%
38
11%
37.1
13%
39
8%
41.8
2%
Witcher 3 ultra *
38.7

* ... smaller is better

Noise Level

Idle
30.3 / 30.3 / 30.3 dB(A)
Load
42.6 / 42.5 dB(A)
 
 
 
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: 30.3 dB(A)
dB(A) 0102030405060708090Deep BassMiddle BassHigh BassLower RangeMidsHigher MidsLower HighsMid HighsUpper HighsSuper Highs203034.5302535.333.235.33135.83835.84031.532.531.55037.533.537.56328.63028.68027.526.927.510027.726.427.712528.32628.316028.724.128.720037.722.937.725055.322.555.331557.120.957.140057.520.257.55005819.75863060.51960.580067.518.267.5100064.617.964.6125059.617.859.6160056.817.456.8200060.817.560.8250056.717.556.7315055.517.755.5400053.217.853.2500060.217.960.2630057.11857.1800059.81859.81000052.718.152.7125006118611600059.518.159.5SPL72.330.372.3N30.31.430.3median 57.1Dell Inspiron 15-7570median 18.1median 57.1Delta5.62.15.634.533.23036.234.53230.732.232.23230.630.631.431.730.63133.830.3293130.536.531.428.830.530.831.230.630.830.828.328.927.828.328.327.928.526.628.927.926.926.925.624.526.925.426.124.72425.427.626.524.124.627.628.92422.422.128.930.124.421.92230.128.525.420.420.828.525.923.419.720.325.925.52219.519.325.527.722.818.818.627.729.323.117.817.929.329.52317.617.729.532.523.117.41732.53322.31717.1333521.916.816.93531.720.216.81731.7321917.116.93228.718.81716.928.726.318.817.11726.321.618.817.117.221.620.31917.317.120.320.122.217.317.220.119.422.317.717.419.442.733.9303042.7421.41.44median 27.9Acer TravelMate P658-G2-MG-7327median 22.8median 17.7median 17.7median 27.92.11.41.922.1hearing rangehide median Fan Noise

Temperature

Stress test for 1 hour
Stress test for 1 hour

The temperature of the Inspiron 15 is comfortably even. It warms up evenly on the top and bottom and remains relatively cool in the direct comparison. The sibling model and also the Huawei and the Acer get hotter, and the Lenovo has the best values. Under load, the test unit warms up to a maximum of 43 °C (~110 °F), and the aluminum surface quickly transfers the heat outside. The palm rests also remain cool at all times. The most heat develops in the central area towards the back. Overall, the Inspiron can score in terms of its temperatures, which might also be the result of the strong throttling of the graphics performance.

The stress tests via Prime 95 and FurMark show the throttling. After only a brief time, the graphics card is throttled from about 1200 MHz down to 405 MHz, and the storage speed even drops to 203 MHz. In this way, the GPU temperature stays at 72 °C (~162 °F), which would leave some head room. The processor levels out at a clock speed of about 2 GHz, and the core temperatures lie at around 80 °C (~176 °F). Dell probably throttles the performance of the Inspiron this much in order to keep a comfortable temperature. After the stress test, the fans remain very active for a long time. 

Dell Inspiron 15-7570
GeForce 940MX, 8550U, Samsung PM961 NVMe MZVLW512HMJP
Asus Vivobook S15 S510UQ-BQ189T
GeForce 940MX, 7200U, Toshiba SG5 THNSNK128GVN8
Acer TravelMate P658-G2-MG-7327
GeForce 940MX, 7500U, Liteonit CV3-8D512
Lenovo IdeaPad 510-15IKB 80SV0087GE
GeForce 940MX, 7500U, Liteonit CV3-DE256
Huawei MateBook D
GeForce 940MX, 7500U, SanDisk SD8SN8U128G1027
Dell Inspiron 15 5000 5567-1753
Radeon R7 M445, 7500U, SanDisk X400 SED 256GB, SATA (SD8TB8U-256G)
Heat
3%
-5%
10%
-11%
-11%
Maximum Upper Side *
42.8
38.2
11%
46.4
-8%
38.3
11%
44.8
-5%
41.6
3%
Maximum Bottom *
43
49
-14%
51.3
-19%
36
16%
50.4
-17%
51.3
-19%
Idle Upper Side *
27.8
24.7
11%
26
6%
24.9
10%
29.4
-6%
29.4
-6%
Idle Bottom *
26.6
25.8
3%
25.7
3%
25.6
4%
31
-17%
32.4
-22%

* ... smaller is better

Max. Load
 37.6 °C42.8 °C39 °C 
 34.2 °C42 °C32 °C 
 29.5 °C28.6 °C28.5 °C 
Maximum: 42.8 °C
Average: 34.9 °C
31 °C43 °C39 °C
29.4 °C38.4 °C36 °C
27.2 °C30 °C30.8 °C
Maximum: 43 °C
Average: 33.9 °C
Power Supply (max.)  46.4 °C | Room Temperature 22.7 °C | FIRT 550-Pocket

Speakers

As with so many notebooks, the audio reproduction cannot convince in this notebook either. The maximum volume is not particularly high, and the bass reproduction is worse than mediocre. The sound spectrum is thin and not enjoyable. 

You can connect external audio devices such as headphones, a stereo system, or microphone via the combined headphone/microphone port.

dB(A) 0102030405060708090Deep BassMiddle BassHigh BassLower RangeMidsHigher MidsLower HighsMid HighsUpper HighsSuper Highs2032.534.532.52531.733.231.73136.93836.94032.632.532.65035.733.535.76329.33029.38028.226.928.210027.126.427.112529.22629.216029.224.129.220037.322.937.325053.722.553.731556.420.956.440057.420.257.450057.419.757.463060.61960.680067.418.267.4100064.317.964.3125059.617.859.6160056.717.456.7200060.117.560.1250056.517.556.5315055.317.755.3400053.117.853.1500060.117.960.16300571857800059.81859.81000052.718.152.7125006118611600059.318.159.3SPL72.130.372.1N29.91.429.9median 57Dell Inspiron 15-7570median 18.1median 57Delta5.62.15.635.335.132.931.831.83236.535.132.428.93328.936.328.848.32761.52752.924.860.92462.822.763.32269.521.267.82174.82075.919.472.718.97117.770.117.86917.671.817.668.117.671.417.673.717.670.417.571.617.671.617.669.617.459.717.583.630.662.51.5median 69.6Apple MacBook 12 (Early 2016) 1.1 GHzmedian 17.84.62.4hearing rangehide median Pink Noise
Dell Inspiron 15-7570 audio analysis

(-) | not very loud speakers (67.44 dB)
Bass 100 - 315 Hz
(-) | nearly no bass - on average 18.2% lower than median
(±) | linearity of bass is average (13.1% delta to prev. frequency)
Mids 400 - 2000 Hz
(+) | balanced mids - only 3.5% away from median
(±) | linearity of mids is average (8.1% delta to prev. frequency)
Highs 2 - 16 kHz
(+) | balanced highs - only 2.3% away from median
(±) | linearity of highs is average (9.9% delta to prev. frequency)
Overall 100 - 16.000 Hz
(±) | linearity of overall sound is average (17.9% difference to median)
Compared to same class
» 35% of all tested devices in this class were better, 7% similar, 58% worse
» The best had a delta of 11%, average was 21%, worst was 48%
Compared to all devices tested
» 31% of all tested devices were better, 5% similar, 64% worse
» The best had a delta of 3%, average was 21%, worst was 53%

Apple MacBook 12 (Early 2016) 1.1 GHz audio analysis

(+) | speakers can play relatively loud (83.6 dB)
Bass 100 - 315 Hz
(±) | reduced bass - on average 11.3% lower than median
(±) | linearity of bass is average (14.2% delta to prev. frequency)
Mids 400 - 2000 Hz
(+) | balanced mids - only 2.4% away from median
(+) | mids are linear (5.5% delta to prev. frequency)
Highs 2 - 16 kHz
(+) | balanced highs - only 2% away from median
(+) | highs are linear (4.5% delta to prev. frequency)
Overall 100 - 16.000 Hz
(+) | overall sound is linear (9.3% difference to median)
Compared to same class
» 1% of all tested devices in this class were better, 1% similar, 97% worse
» The best had a delta of 9%, average was 19%, worst was 41%
Compared to all devices tested
» 2% of all tested devices were better, 0% similar, 98% worse
» The best had a delta of 3%, average was 21%, worst was 53%

Frequency comparison (Checkboxes selectable!)

Power Management

Power Consumption

While idling, the Inspiron is efficient. Thanks to Optimus and the very variable processor speed, it keeps up with the competition. Under load, the picture changes slightly. Despite the relatively strong performance throttling, our test unit consumes more power than most of the competitors during very demanding work. Only the Acer and the sibling model consume a similar amount during maximum load. We measured a top value of 59 watts. The included power supply is rated at 65 watts, which should be sufficient.

Power Consumption
Off / Standbydarklight 0.4 / 0.5 Watt
Idledarkmidlight 3.6 / 6.7 / 9.2 Watt
Load midlight 59 / 58 Watt
 color bar
Key: min: dark, med: mid, max: light        Metrahit Energy
Dell Inspiron 15-7570
8550U, GeForce 940MX, Samsung PM961 NVMe MZVLW512HMJP, IPS, 1920x1080, 15.6
Asus Vivobook S15 S510UQ-BQ189T
7200U, GeForce 940MX, Toshiba SG5 THNSNK128GVN8, IPS, 1920x1080, 15.6
Acer TravelMate P658-G2-MG-7327
7500U, GeForce 940MX, Liteonit CV3-8D512, IPS, 1920x1080, 15.6
Lenovo IdeaPad 510-15IKB 80SV0087GE
7500U, GeForce 940MX, Liteonit CV3-DE256, IPS, 1920x1080, 15.6
Huawei MateBook D
7500U, GeForce 940MX, SanDisk SD8SN8U128G1027, IPS, 1920x1080, 15.6
Dell Inspiron 15 5000 5567-1753
7500U, Radeon R7 M445, SanDisk X400 SED 256GB, SATA (SD8TB8U-256G), TN LED, 1920x1080, 15.6
Power Consumption
2%
-7%
5%
-6%
6%
Idle Minimum *
3.6
3.6
-0%
3.9
-8%
3.9
-8%
5.14
-43%
4
-11%
Idle Average *
6.7
6.8
-1%
7.9
-18%
7.4
-10%
9.07
-35%
5.4
19%
Idle Maximum *
9.2
9.5
-3%
11.3
-23%
9.5
-3%
9.33
-1%
8.3
10%
Load Average *
59
51.6
13%
47
20%
41
31%
46.76
21%
54
8%
Load Maximum *
58
56
3%
62
-7%
48
17%
42.59
27%
55.4
4%
Witcher 3 ultra *
40.18

* ... smaller is better

Battery Life

The Inspiron 15 has a 42-Wh battery. To establish how long the device can last away from the mains outlet, we test various scenarios.

For the maximum runtime, we deactivate all the communication modules, minimize the brightness, and activate power saving mode. We simulate a minimal load via the BatteryEater read benchmark. In this way, our test unit lasts for a maximum of 4 hours and 40 minutes. For an all-rounder with such built-in hardware, this is anything but a top value. In the comparison, this is only sufficient for the last place. The next best competitors last almost twice as long. However, since the Acer and Lenovo lack some important measurement data, they are dropping out of the comparison.

To measure the minimum runtime, we turn up all the power users and simulate a large load with the BatteryEater Classic test. The Inspiron lasts for only 1 hour and 20 minutes. Even though all the competitors come out close together here, this measurement is anything but satisfactory.

We activate the Balanced mode in the WLAN practice test, reduce the brightness to 150 cd/m2, and surf the web with changing pages via a script. The test unit achieves a runtime of 1 hour and 45 minutes, which is quite subterranean for a notebook of this price range.

In our video test, the Inspiron achieves about 4 hours. The power saver mode was active, the communication modules deactivated, but the brightness was maximized.

Overall, the battery life of the Inspiron 15 is a negative surprise. Although the device is relatively light and offers Optimus and an energy efficient processor, the measured runtimes are very weak, which clearly limits the mobility that it has aimed for. Considering the hardware, it is a mystery to us as to why the device does so badly here.

Battery Runtime
Idle (without WLAN, min brightness)
4h 40min
WiFi Surfing v1.3 (Edge)
1h 45min
Big Buck Bunny H.264 1080p
4h 00min
Load (maximum brightness)
1h 20min
Dell Inspiron 15-7570
8550U, GeForce 940MX, 42 Wh
Asus Vivobook S15 S510UQ-BQ189T
7200U, GeForce 940MX, 42 Wh
Acer TravelMate P658-G2-MG-7327
7500U, GeForce 940MX, 55 Wh
Lenovo IdeaPad 510-15IKB 80SV0087GE
7500U, GeForce 940MX, 30 Wh
Huawei MateBook D
7500U, GeForce 940MX, 43.3 Wh
Dell Inspiron 15 5000 5567-1753
7500U, Radeon R7 M445, 42 Wh
Battery Runtime
61%
382%
162%
192%
104%
Reader / Idle
280
423
51%
956
241%
466
66%
H.264
240
316
32%
WiFi v1.3
105
255
143%
506
382%
275
162%
441
320%
417
297%
Load
80
71
-11%
93
16%
95
19%

Verdict

Pros

+ sturdy aluminum case
+ good contrast and black value
+ hardware easily accessible via bottom cover
+ backlit keyboard
+ CPU of the 8th Intel generation
+ very good SSD
+ always stays cool

Cons

- bad card reader
- no Thunderbolt 3
- no number pad
- loud clicking noises
- latencies and drop outs
- bad graphics performance and throttling
- fan under load and high-frequency fan noise
- bad battery life
The Dell Inspiron 15 7570, provided by cyberport
The Dell Inspiron 15 7570, provided by cyberport

The Inspiron 15 7000 (7570-9726) is a difficult case. On the one hand, we like the design and workmanship all around the sturdy aluminum case. Despite the reflective surface, the display also strikes a very good figure in some parts, and at least on paper, the hardware convinces with good values, particularly the excellent SSD. In addition, the device always stays comfortably cool.

On the other hand, the Dell Inspiron has some weaknesses, some of which cannot be explained. The worst are the very poor battery life, as well as the measured latencies and drop outs. Apparently the device struggles with some great driver problems, since the graphics performance is also heavily throttled. In the system and particularly graphics performance, the device does not reach the level of the competitors and cannot make full use of the potential promised by the good hardware. But that alone would not be so bad, if at least the mobility would have been better with a good battery life. After all, the device is a light business or all-round model. Unfortunately the opposite is the case.

While the Dell Inspiron has good prerequisites in terms of strong components, unfortunately by having surprising weaknesses, it messes up its justified promises of a top value.

Currently, the device can be purchased for a price of about 1150 Euros (~$1324; starting at $750 in the US). Users for whom the graphics performance is less important and who look for a good notebook for their home are still well-served by the Dell Inspiron. Perhaps Dell can manage to remedy some of the worst weaknesses through updates. We would wish it, since then the device would also be suitable for more mobile usage tasks.

Dell Inspiron 15-7570 - 11/08/2017 v6
Christian Hintze

Chassis
89 / 98 → 91%
Keyboard
90%
Pointing Device
88%
Connectivity
59 / 80 → 74%
Weight
63 / 67 → 92%
Battery
58%
Display
82%
Games Performance
55 / 68 → 81%
Application Performance
91 / 92 → 99%
Temperature
91%
Noise
89%
Audio
51%
Camera
44 / 85 → 52%
Add Points
-1%
Average
68%
84%
Office - Weighted Average

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> Notebook / Laptop Reviews and News > Reviews > Dell Inspiron 15 7570 (i7-8550U, 940MX) Laptop Review
Christian Hintze, 2017-11-14 (Update: 2017-11-15)