Notebookcheck

Dell Inspiron 15 5568 Convertible Review

Nino Ricchizzi, Stefanie Voigt (translated by Liala Stieglitz), 07/24/2016

Fusion. With a 15-inch convertible, Dell tries to merge the most important qualities of a laptop and tablet in its new Inspiron. However, some compromises have to be made to achieve this high goal.

For the original German review, see here.

Dell presents the new Inspiron 15 5000 series that aims to establish itself in the 15-inch convertible category. Here, the mobility qualities of a tablet have to be fused with the features of a conventional laptop. Flexibility and reliability are two main objectives of the new Inspiron lineup. To achieve this, the manufacturer has installed an Intel Core i7 processor, a 16 GB DDR4 working memory and a 256 GB SSD. This configuration costs approximately 1000 Euros (~$1099). Buyers who do not want to spend that much can purchase a somewhat weaker version based on an Intel Core i5 processor and 8 GB of working memory. Looking at the competition is always advisable, and thus in our tests we recurrently use devices from other manufacturers for comparison. Here, HP's Spectre x360 that features an almost identical build as our review sample with the exception of a slightly weaker processor is included. The Envy 15 also by HP will be mentioned in our test. It is equipped with  a dedicated Nvidia GeForce 930M priced at 1000 Euros (~$1099).

Another opponent that we will use is Acer's Aspire R14 that is slightly smaller at 14 inches. Finally, we will refer to Lenovo's Yoga 510 that we have tested before. It features a dedicated AMD graphics card and Intel Core i5 processor priced at 900 Euros (~$989). An Intel Core i7 version is also available, which we will use in the relevant tests.

Dell Inspiron 15 5568 (Inspiron 15 Series)
Processor
Intel Core i7-6500U (Intel Core i7), TDP: 15 W, 2 cores
Graphics adapter
Intel HD Graphics 520, Core: 300 MHz, 20.19.15.4390
Memory
16384 MB 
, 2x8 GB DDR4 (2 of 2 slots filled), dual-channel
Display
15.6 inch 16:9, 1920 x 1080 pixel 141 PPI, capacitive multitouch, AU Optronics B156HW01 V0, IPS, glossy: yes
Mainboard
Intel Skylake-U Premium PCH
Storage
Toshiba THNSNK256GCS8, 256 GB 
, 2.5-inch, SATA 3.2
Soundcard
Intel Skylake-U/Y PCH - High Definition Audio
Connections
1 USB 2.0, 2 USB 3.0 / 3.1 Gen1, 1 HDMI, 1 Kensington Lock, Audio Connections: combo audio, Card Reader: SD, SDHC, SDXC
Networking
Intel Dual Band Wireless-AC 3165 (a/b/g/n/ac), Bluetooth 4.2
Size
height x width x depth (in mm): 20 x 382 x 253 ( = 0.79 x 15.04 x 9.96 in)
Battery
42 Wh Lithium-Ion
Operating System
Microsoft Windows 10 Home 64 Bit
Camera
Webcam: 720p
Additional features
Speakers: stereo speakers, Keyboard Light: yes, 12 Months Warranty
Weight
2.072 kg ( = 73.09 oz / 4.57 pounds), Power Supply: 284 g ( = 10.02 oz / 0.63 pounds)
Price
1000 Euro
Note: The manufacturer may use components from different suppliers including display panels, drives or memory sticks with similar specifications.

 

Case

The first thing that strikes us is the visual similarity and the rounded edges on the front and rear of the convertible test device to that of HP's Spectre x360. Overall, we did not find any noticeably annoying rough edges and thus the Inspiron presents an extremely good feel. The build also gives a solid impression, not least due to the base unit's robustness. Only the easy to dent display back is noted negatively.

Unfortunately, the convertible cannot be opened with one hand. Furthermore, the display rocks slightly. However, the hinges have enough grip. No maintenance hatches are on the underside and the battery cannot be replaced without some effort. In order to have a look inside, ten screws have to be released. As if that was not enough, countless clips prevent us from removing the base plate. This is only possible with extreme care and a lot of patience. Replacing the battery, for example, is only possible after its removal.

The new Inspiron in tablet mode
The new Inspiron in tablet mode
Somewhat stable hinges...
...prevent opening the convertible...
...with one hand.
Quality build
Cleaning the fan is possible
It is not easy to...
...remove the base plate.
Both working memory slots are filled.
Elegant looks
The Inspiron in notebook mode
Inspiron 5568 rear view
The logo adorns the touchscreen's panel

With a height of just 20 mm (~0.8 in) maximum, the new Inspiron is a slim companion. Only HP's Spectre x360 is 4 mm (~0.16 in) slimmer.

The Inspiron is not a traditional tablet alternative. With a weight of approximately 2 kg (~4.4 lb), the review sample cannot be carried around for too long. However, the rivals are also in a similar weight category.

Size Comparison

382 mm / 15 inch 250 mm / 9.84 inch 23.9 mm / 0.941 inch 2.2 kg4.89 lbs382 mm / 15 inch 253 mm / 9.96 inch 20 mm / 0.787 inch 2.1 kg4.57 lbs378 mm / 14.9 inch 253 mm / 9.96 inch 21.35 mm / 0.841 inch 2.1 kg4.59 lbs375.9 mm / 14.8 inch 247.6 mm / 9.75 inch 16 mm / 0.63 inch 1.9 kg4.09 lbs343.8 mm / 13.5 inch 245 mm / 9.65 inch 18.5 mm / 0.728 inch 1.9 kg4.19 lbs

Connectivity

The interface diversity of Dell's new convertible is limited. Unfortunately, neither a USB Type-C nor a DisplayPort as found, for example, in HP's Spectre x360 is installed. All ports are situated in the rear areas, which is positive for the cable situation on a desk.

Left: Power-in, HDMI-out, 2x USB 3.0, combo audio
Left: Power-in, HDMI-out, 2x USB 3.0, combo audio
Right: SD card reader, 1x USB 3.0, Elegant security preparation
Right: SD card reader, 1x USB 3.0, Elegant security preparation
Rear
Rear
Front
Front

SD Card Reader

We analyze the speed of the installed card reader with our Toshiba Exceria Pro SDXC 64 GB UHS-II reference SD card. According to the AS SSD benchmark, only a slow read speed of 26.5 MB/s is achieved. The review sample managed only 21 MB/s when copying image files (approx. 5 MB each). The transfer rates of 85.11 MB/s that Lenovo's Yoga 510 achieves in AS SSD, for example, proves that these rates are not standard.

SDCardreader Transfer Speed
average JPG Copy Test (av. of 3 runs)
Dell XPS 13 2016 9350 (FHD, i7-6560U)
Iris Graphics 540, 6560U, Samsung PM951 NVMe MZ-VLV256D
135 MB/s ∼100% +543%
Lenovo Yoga 510-15ISK
Radeon R7 M460, 6200U, Liteonit CV3-DE256
74.2 MB/s ∼55% +253%
HP Envy 15-w103ng x360
GeForce 930M, 6200U, Samsung SSD PM851 256 GB MZNTE256HMHP
68.4 MB/s ∼51% +226%
Dell Inspiron 15 5568
HD Graphics 520, 6500U, Toshiba THNSNK256GCS8
21 MB/s ∼16%
Acer Aspire R14 R5-471T-79GQ
HD Graphics 520, 6500U
17 MB/s ∼13% -19%
Lenovo Ideapad 500-15ISK 80NT005WGE
Radeon R7 M360, 6500U, Samsung PM871 MZYLN256HCHP
14 MB/s ∼10% -33%
maximum AS SSD Seq Read Test (1GB)
Dell XPS 13 2016 9350 (FHD, i7-6560U)
Iris Graphics 540, 6560U, Samsung PM951 NVMe MZ-VLV256D
210 MB/s ∼100% +692%
HP Envy 15-w103ng x360
GeForce 930M, 6200U, Samsung SSD PM851 256 GB MZNTE256HMHP
88 MB/s ∼42% +232%
Lenovo Yoga 510-15ISK
Radeon R7 M460, 6200U, Liteonit CV3-DE256
85.11 MB/s ∼41% +221%
Dell Inspiron 15 5568
HD Graphics 520, 6500U, Toshiba THNSNK256GCS8
26.5 MB/s ∼13%
Lenovo Ideapad 500-15ISK 80NT005WGE
Radeon R7 M360, 6500U, Samsung PM871 MZYLN256HCHP
25.9 MB/s ∼12% -2%
Acer Aspire R14 R5-471T-79GQ
HD Graphics 520, 6500U
25.2 MB/s ∼12% -5%

Communication

Since Dell's Inspiron 5568 does not feature an Ethernet port as found in Lenovo's Yoga 510, only wireless communication is possible. Intel's Dual Band Wireless-AC 3165 module is installed for this. It is to achieve gross rates of up to 433 MBit/s. Furthermore, it can communicate via Bluetooth 4.1. In our lab setup, we measured a maximum reception rate of 372 MBit/s and transmission rate of up to 390 MBit/s.

Networking
iperf Server (receive) TCP 1 m
Dell Inspiron 15 5568
HD Graphics 520, 6500U, Toshiba THNSNK256GCS8
372 MBit/s ∼100%
HP x2 210 G1
HD Graphics (Cherry Trail), Z8300, 64 GB eMMC Flash
80 MBit/s ∼22% -78%
iperf Client (transmit) TCP 1 m
Dell Inspiron 15 5568
HD Graphics 520, 6500U, Toshiba THNSNK256GCS8
390 MBit/s ∼100%
HP x2 210 G1
HD Graphics (Cherry Trail), Z8300, 64 GB eMMC Flash
71 MBit/s ∼18% -82%

Accessories

No accessories are included, and none made specifically for the new Inspiron that can be found on the corresponding shop page to date.

Maintenance

As mentioned in the Case section, removing the base plate is not easy. However, once the base plate has been removed the working memory, battery, and Wi-Fi module can be easily replaced. It is even possible to clean the fan.

Access to all important components
Access to all important components
The battery can be replaced after removing the base plate.
The battery can be replaced after removing the base plate.

Warranty

The warranty is limited to one year including pick-up and hardware support. It can be extended up to four years (two years: 69 Euros/~$76, three years: 109 Euros/~$120, four years: 159 Euros/~$175). Dell offers an optional Premium Support that includes a 24 h service, on-site service (remote diagnosis), and an automatic support (software solution). As with the standard warranty, it can be extended from one up to four years. One year costs 69 Euros (~$76) and 151 Euros ($166) for four years.

In addition to these warranties, an accidental damage insurance for 37 Euros (~$41) can be added directly while ordering. It covers accidental damages caused by liquids, drops, electrical surge and screen damage.

Input Devices

Good input devices
Good input devices
Keyboard backlight
Keyboard backlight

Keyboard

The black chiclet keyboard installed in Dell's new Inspiron 5000 series convinces us with its generously-sized keys and good surface structure. The keys still provide enough grip even when typing energetically. The pressure point of all keys is homogeneous and accurate. Only the drop could be slightly longer. Overall, the keyboard convinces with a very crisp typing quality. 10 finger acrobats will be very happy with the keyboard. Working at night is no problem thanks to the two-level keyboard backlight, and the typing noise also convinces with a very subdued soundscape.

Overall, it is fun to work with the installed keyboard. Only the slightly too small arrow keys and the absence of a number pad, despite enough room on the keyboard's left and right, have to be criticized. Users who rely on a number pad should take a look at HP's Envy 15 or Lenovo's Yoga 510.

Touchpad

From the beginning, the large touchpad with a size of 10.5 x 8.1 cm (~4.1 x 3.2 in) was a positive factor in the new convertible. The manufacturer also does a good job. Inputs are easily detected everywhere, and the touchpad still responds just as well in the corners. A lightly roughened surface that provides enough grip adds to this. The keys incorporated in the lower area have a short and crisp pressure point.

The overall satisfactory impression is not diminished in gesture implementation. All inputs are detected and implemented smoothly and quickly.

Touchscreen

The capacitive multi-touchscreen easily detects all ten fingers simultaneously. Drag and drop actions also functions without any problems.

Display

Pixel grid: Inspiron
Pixel grid: Inspiron

The glossy screen in the 15.6-inch convertible has a Full HD resolution of 1920x1080 pixels. Dell has opted for a high-quality IPS panel by AU Optronics. We measure an average brightness of 249 cd/m². Although this rate is rather mediocre compared with modern laptops from this price range, most of the opponents are much darker. Only HP's Spectre x360 shines brighter with an average brightness of 295 cd/m².

241
cd/m²
232
cd/m²
229
cd/m²
268
cd/m²
266
cd/m²
247
cd/m²
260
cd/m²
260
cd/m²
241
cd/m²
Distribution of brightness
X-Rite i1Pro 2
Maximum: 268 cd/m² Average: 249.3 cd/m² Minimum: 16 cd/m²
Brightness Distribution: 85 %
Center on Battery: 266 cd/m²
Contrast: 1023:1 (Black: 0.26 cd/m²)
ΔE Color 4.98 | 0.6-29.43 Ø6.1
ΔE Greyscale 2.68 | 0.64-98 Ø6.3
57% sRGB (Argyll 3D) 36% AdobeRGB 1998 (Argyll 3D)
Gamma: 2.27
Dell Inspiron 15 5568
HD Graphics 520, 6500U, Toshiba THNSNK256GCS8
HP Spectre x360 15-ap012dx
HD Graphics 520, 6200U, Sandisk X300 SD7SN6S-256G-1006
HP Envy 15-w103ng x360
GeForce 930M, 6200U, Samsung SSD PM851 256 GB MZNTE256HMHP
Lenovo Yoga 510-15ISK
Radeon R7 M460, 6200U, Liteonit CV3-DE256
Acer Aspire R14 R5-471T-79GQ
HD Graphics 520, 6500U
Response Times
-3%
-8%
-22%
-63%
Response Time Grey 50% / Grey 80% *
42 (19, 23)
32.8 (14.8, 18)
22%
37 (38, 36)
12%
43.2 (19.6, 23.6)
-3%
80 (24, 56)
-90%
Response Time Black / White *
22 (6, 16)
28 (4.8, 23.2)
-27%
28 (24, 32)
-27%
30.8 (17.6, 13.2)
-40%
30 (9, 31)
-36%
PWM Frequency
Screen
4%
-30%
4%
-7%
Brightness middle
266
298
12%
208
-22%
254
-5%
215
-19%
Brightness
249
295
18%
205
-18%
230
-8%
203
-18%
Brightness Distribution
85
88
4%
80
-6%
86
1%
85
0%
Black Level *
0.26
0.57
-119%
0.26
-0%
0.26
-0%
0.25
4%
Contrast
1023
523
-49%
800
-22%
977
-4%
860
-16%
Colorchecker DeltaE2000 *
4.98
4.43
11%
6.97
-40%
4.23
15%
5.04
-1%
Colorchecker DeltaE2000 max. *
11.82
6.62
44%
9.5
20%
10.6
10%
Greyscale DeltaE2000 *
2.68
2.45
9%
7.37
-175%
2.87
-7%
3.3
-23%
Gamma
2.27 97%
2.45 90%
2.34 94%
2.35 94%
2.35 94%
CCT
6583 99%
6326 103%
6823 95%
5965 109%
6370 102%
Color Space (Percent of AdobeRGB 1998)
36
57.2
59%
38
6%
40.35
12%
35
-3%
Color Space (Percent of sRGB)
57
87.8
54%
59
4%
63.48
11%
55
-4%
Total Average (Program / Settings)
1% / 3%
-19% / -26%
-9% / -1%
-35% / -16%

* ... smaller is better

Next, we look at the CalMAN analysis and examine the DeltaE deviations in colors and grayscale levels. We measure an average difference of 4.98 in colors, which could be better in an IPS panel. The DeltaE deviation is 2.68 in the grayscale levels. Both rates are roughly on par with the rivals.

The color space coverage, important for professional use is also rather poor. The sRGB space is covered by 57% and the AdobeRGB space by just 36%.

CalMAN: Grayscale
CalMAN: Grayscale
CalMAN: ColorChecker
CalMAN: ColorChecker
CalMAN: Saturation Sweeps
CalMAN: Saturation Sweeps
sRGB color space coverage (57%)
sRGB color space coverage (57%)
AdobeRGB color space coverage (36%)
AdobeRGB color space coverage (36%)
 

Outdoor use is only conditionally possible. The screen's brightness cannot compensate for the strong reflections outdoors. Thus, using the laptop is only advisable in shaded environments.

The glossy screen's...
The glossy screen's...
...brightness is too low for...
...brightness is too low for...
...compensating reflections.
...compensating reflections.

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
22 ms ... rise ↗ and fall ↘ combined↗ 6 ms rise
↘ 16 ms fall
The screen shows good response rates in our tests, but may be too slow for competitive gamers.
In comparison, all tested devices range from 0.8 (minimum) to 240 (maximum) ms. » 25 % of all devices are better.
This means that the measured response time is better than the average of all tested devices (25.3 ms).
       Response Time 50% Grey to 80% Grey
42 ms ... rise ↗ and fall ↘ combined↗ 19 ms rise
↘ 23 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. » 54 % of all devices are better.
This means that the measured response time is similar to the average of all tested devices (40.4 ms).

Screen Flickering / PWM (Pulse-Width Modulation)

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

In comparison: 51 % of all tested devices do not use PWM to dim the display. If PWM was detected, an average of 9533 (minimum: 43 - maximum: 142900) Hz was measured.

Thanks to the installed IPS panel, the legibility remains true from every viewing angle. In addition, the incorporated 360° hinge ensures a comfortable working position at all times.

Viewing angle stability
Viewing angle stability

Performance

LatencyMon
LatencyMon

Dell has equipped its new 15-inch convertible with a high-performance Intel Core i7 CPU, dual-channel working memory and an SSD storage. Thus, our review sample boasts with highly responsive components that will primarily find their purpose in the office and multimedia sector. Users who work with somewhat more demanding software can do this thanks to sufficient performance reserves. Our current convertible is priced at 1000 Euros (~$1099).

 

Processor

At the heart of Dell’s new convertible is an Intel Core i7-6500U. The dual-core processor has a base clock speed of 2.5 GHz that can be increased up to 3100 MHz via the integrated Boost feature. Intel specifies a maximum power dissipation of 15 W (TDP).

The power of the installed CPU is easily enough for smooth running of routine office and multimedia applications. There is even some performance reserves for more demanding software. We determine the performance capacities of our review sample with Cinebench R15. First we noticed that the Turbo rate could not be maintained. The CPU clocks at an average of 2.8 GHz, and thus achieves a slightly below average score of 303 points to be in line with the less powerful Intel Core i5-6200U in the HP Spectre x360.

No differences are obvious when starting the Cinebench benchmark in battery mode. Consequently, compromises do not have to be made when working on the go.

More comparisons regarding the different processors and various benchmarks can be found in our benchmark list of recent laptop processors.

Cinebench R15
CPU Single 64Bit
Lenovo Ideapad 500-15ISK 80NT005WGE
Radeon R7 M360, 6500U, Samsung PM871 MZYLN256HCHP
130 Points ∼100% +2%
Acer Aspire R14 R5-471T-79GQ
HD Graphics 520, 6500U
128 Points ∼98% 0%
Dell Inspiron 15 5568
HD Graphics 520, 6500U, Toshiba THNSNK256GCS8
128 Points ∼98%
HP Spectre x360 15-ap012dx
HD Graphics 520, 6200U, Sandisk X300 SD7SN6S-256G-1006
123 Points ∼95% -4%
HP Envy 15-w103ng x360
GeForce 930M, 6200U, Samsung SSD PM851 256 GB MZNTE256HMHP
116 Points ∼89% -9%
Lenovo Yoga 510-15ISK
Radeon R7 M460, 6200U, Liteonit CV3-DE256
114 Points ∼88% -11%
CPU Multi 64Bit
Lenovo Ideapad 500-15ISK 80NT005WGE
Radeon R7 M360, 6500U, Samsung PM871 MZYLN256HCHP
322 Points ∼100% +5%
Acer Aspire R14 R5-471T-79GQ
HD Graphics 520, 6500U
320 Points ∼99% +4%
HP Spectre x360 15-ap012dx
HD Graphics 520, 6200U, Sandisk X300 SD7SN6S-256G-1006
310 Points ∼96% +1%
Dell Inspiron 15 5568
HD Graphics 520, 6500U, Toshiba THNSNK256GCS8
308 Points ∼96%
HP Envy 15-w103ng x360
GeForce 930M, 6200U, Samsung SSD PM851 256 GB MZNTE256HMHP
292 Points ∼91% -5%
Lenovo Yoga 510-15ISK
Radeon R7 M460, 6200U, Liteonit CV3-DE256
289 Points ∼90% -6%
Cinebench R15 CPU Single 64Bit
128 Points
Cinebench R15 CPU Multi 64Bit
308 Points
Cinebench R15 OpenGL 64Bit
41.34 fps
Cinebench R15 Ref. Match 64Bit
97.8 %
Help

System Performance

The above mentioned hardware combination always ensures a smooth and responsive workflow. PCMark 8 confirms this in the Home and Work benchmark. It sees Lenovo's Yoga 510 as the leader with 3607 points. HP's Spectre x360 lags far behind with over 20% fewer points.

PCMark 8 - Home Score Accelerated v2
Lenovo Yoga 510-15ISK
Radeon R7 M460, 6200U, Liteonit CV3-DE256
3651 Points ∼60% +1%
Dell Inspiron 15 5568
HD Graphics 520, 6500U, Toshiba THNSNK256GCS8
3607 Points ∼59%
Lenovo Ideapad 500-15ISK 80NT005WGE
Radeon R7 M360, 6500U, Samsung PM871 MZYLN256HCHP
3486 Points ∼57% -3%
Acer Aspire R14 R5-471T-79GQ
HD Graphics 520, 6500U
3392 Points ∼56% -6%
HP Envy 15-w103ng x360
GeForce 930M, 6200U, Samsung SSD PM851 256 GB MZNTE256HMHP
3200 Points ∼53% -11%
HP Spectre x360 15-ap012dx
HD Graphics 520, 6200U, Sandisk X300 SD7SN6S-256G-1006
2847 Points ∼47% -21%
PCMark 8 Home Score Accelerated v2
3607 points
PCMark 8 Work Score Accelerated v2
4433 points
Help

Storage Device

Data is stored on a 256 GB SSD by Toshiba. It is a 2.5-inch solid-state drive that is also found in the cheaper, 800-Euro (~$879) version of the convertible. Our convertible benefits from the SSD since it ensures faster response times, better shock resistance and higher data rates than from a rotating magnet hard drive (HDD).

According to CrystalDiskMark, sequential read speeds of almost 460 MB/s are achieved. The opponents do a slightly better job here. HP's Envy 15 is the leader with read rates of up to 514.8 MB/s. This behavior does not change in the important 4K test. HP's Envy 15 even scores 34% better. Sequential write is performed at a data rate of up to 270 MB/s. Lenovo's Yoga 510 manages much better outcomes with 450.7 MB/s.

Dell Inspiron 15 5568
HD Graphics 520, 6500U, Toshiba THNSNK256GCS8
HP Spectre x360 15-ap012dx
HD Graphics 520, 6200U, Sandisk X300 SD7SN6S-256G-1006
HP Envy 15-w103ng x360
GeForce 930M, 6200U, Samsung SSD PM851 256 GB MZNTE256HMHP
Acer Aspire R14 R5-471T-79GQ
HD Graphics 520, 6500U
Lenovo Yoga 510-15ISK
Radeon R7 M460, 6200U, Liteonit CV3-DE256
CrystalDiskMark 3.0
14%
13%
-9%
18%
Write 4k QD32
197.6
138.7
-30%
239
21%
161.6
-18%
232
17%
Read 4k QD32
275.3
281.2
2%
367.9
34%
278.5
1%
281.5
2%
Write 4k
86.67
93
7%
95.15
10%
81.62
-6%
63.65
-27%
Read 4k
19.88
35.48
78%
27.64
39%
26.04
31%
27.05
36%
Write 512
242
318.9
32%
240
-1%
161.5
-33%
356.3
47%
Read 512
397.4
258.4
-35%
391.3
-2%
319.7
-20%
384.5
-3%
Write Seq
270
425
57%
240.7
-11%
161.6
-40%
450.7
67%
Read Seq
458.6
475.6
4%
514.8
12%
502.8
10%
487
6%
Toshiba THNSNK256GCS8
Sequential Read: 458.6 MB/s
Sequential Write: 270 MB/s
512K Read: 397.4 MB/s
512K Write: 242 MB/s
4K Read: 19.88 MB/s
4K Write: 86.67 MB/s
4K QD32 Read: 275.3 MB/s
4K QD32 Write: 197.6 MB/s

Graphics Card

Intel's HD Graphics 520 processor-integrated graphics card is responsible for video output. It comes from the Skylake generation and has a dynamic clock rate of 300 to 1050 MHz (Boost). The graphics unit is supported by the dual-channel DDR4 working memory. We use 3DMark 11 for analyzing the graphics performance. It scores better than the similarly equipped Acer Aspire R14 with an outcome of 1672 points. Should the performance not be enough for various 3D applications, a look at the rivals with a dedicated graphics card might be worthwhile. For example, HP's Envy 15 features Nvidia's GeForce 930M that achieves roughly 36% more points in 3DMark 11.

As just seen in Processor, the performance remains stable in mobile use.

More comparisons regarding single graphics cards can be found in our special article concerning laptop graphics cards.

3DMark 11 - 1280x720 Performance
Lenovo Ideapad 500-15ISK 80NT005WGE
Radeon R7 M360, 6500U, Samsung PM871 MZYLN256HCHP
2301 Points ∼7% +38%
HP Envy 15-w103ng x360
GeForce 930M, 6200U, Samsung SSD PM851 256 GB MZNTE256HMHP
2270 Points ∼7% +36%
Lenovo Yoga 510-15ISK
Radeon R7 M460, 6200U, Liteonit CV3-DE256
2246 Points ∼7% +34%
Dell Inspiron 15 5568
HD Graphics 520, 6500U, Toshiba THNSNK256GCS8
1672 Points ∼5%
Acer Aspire R14 R5-471T-79GQ
HD Graphics 520, 6500U
1584 Points ∼5% -5%
HP Spectre x360 15-ap012dx
HD Graphics 520, 6200U, Sandisk X300 SD7SN6S-256G-1006
1565 Points ∼5% -6%
3DMark 11 Performance
1672 points
3DMark Cloud Gate Standard Score
6323 points
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Gaming Performance

A processor-integrated graphics card such as the one in the Inspiron 5568 limits the choice of smoothly reproducible games initially. However, users who want to escape the real world and immerse into the gaming world should restrict themselves to games from the past few years. The latest "Rise of the Tomb Raider", for example, does not run smoothly in any setting. This looks different with "Tomb Raider" and "BioShock Infinite" from 2013. Both games can be played smoothly using minimum and medium graphic settings.

More games that can be played smoothly can be found in our article about the gaming performance of recent laptop graphics cards.

Tomb Raider
1366x768 High Preset AA:FX AF:8x
HP Envy 15-w103ng x360
GeForce 930M, 6200U, Samsung SSD PM851 256 GB MZNTE256HMHP
33.4 fps ∼100% +20%
Lenovo Ideapad 500-15ISK 80NT005WGE
Radeon R7 M360, 6500U, Samsung PM871 MZYLN256HCHP
31.5 fps ∼94% +13%
Lenovo Yoga 510-15ISK
Radeon R7 M460, 6200U, Liteonit CV3-DE256
30 fps ∼90% +8%
Dell Inspiron 15 5568
HD Graphics 520, 6500U, Toshiba THNSNK256GCS8
27.9 fps ∼84%
Asus ASUSPRO P2530UA-DM0046E
HD Graphics 520, 6500U, Samsung SSD 850 EVO 250GB
25.6 fps ∼77% -8%
Acer Aspire R14 R5-471T-79GQ
HD Graphics 520, 6500U
25.2 fps ∼75% -10%
Acer TravelMate P648-M-757N
HD Graphics 520, 6500U, Lite-On CV1-8B256
23.4 fps ∼70% -16%
Lenovo ThinkPad X260-20F6007RGE
HD Graphics 520, 6500U, Liteonit LCH-512V2S
18.6 fps ∼56% -33%
1366x768 Normal Preset AA:FX AF:4x
HP Envy 15-w103ng x360
GeForce 930M, 6200U, Samsung SSD PM851 256 GB MZNTE256HMHP
58 fps ∼100% +36%
Dell Inspiron 15 5568
HD Graphics 520, 6500U, Toshiba THNSNK256GCS8
42.7 fps ∼74%
Lenovo Ideapad 500-15ISK 80NT005WGE
Radeon R7 M360, 6500U, Samsung PM871 MZYLN256HCHP
42.3 fps ∼73% -1%
Acer Aspire R14 R5-471T-79GQ
HD Graphics 520, 6500U
41.7 fps ∼72% -2%
Lenovo Yoga 510-15ISK
Radeon R7 M460, 6200U, Liteonit CV3-DE256
39.9 fps ∼69% -7%
Asus ASUSPRO P2530UA-DM0046E
HD Graphics 520, 6500U, Samsung SSD 850 EVO 250GB
38.2 fps ∼66% -11%
Acer TravelMate P648-M-757N
HD Graphics 520, 6500U, Lite-On CV1-8B256
33.8 fps ∼58% -21%
Lenovo ThinkPad X260-20F6007RGE
HD Graphics 520, 6500U, Liteonit LCH-512V2S
28.1 fps ∼48% -34%
low med. high ultra
Tomb Raider (2013) 84.142.727.912.6fps
BioShock Infinite (2013) 54.431.527.78.2fps
Rise of the Tomb Raider (2016) 17.610.86.2fps

Emissions

Fan characteristics
Fan characteristics

System Noise

Dell accomplishes a feat in terms of fan noise. The fan is completely inactive in idle mode and takes its time before starting up even during constant, high load. The noise level that is then produced is just 36.3 dB (A). In a nutshell: The fan's noise is never distracting. This also includes the produced frequency that is not noticed unfavorably at the produced noise level.

Noise Level

Idle
32.8 / 32.8 / 33.8 dB(A)
Load
36.3 / 36.3 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: 31.2 dB(A)

Temperature

Inspiron's underside
Inspiron's underside
Inspiron in the stress test
Inspiron in the stress test

The surface never gets too hot in idle mode and everyday use. Some deficiencies in heat distribution are first seen during load. A section on the rear gets particularly hot with rates of up to 50.6 °C (~123 °F). HP's Spectre x360 and Acer's Aspire R14 present a better outcome with approximately 10 °C (~18 °F) less. The other contenders do not reach such high temperatures as our current model of Dell's Inspiron 5568, either.

Furthermore, the user should practice caution with regards to the power supply. It can get up to 50 °C (~122 °F) during load (32.4 °C/~90 °F in idle).

The installed CPU throttled immediately after we started our stress test programs FurMark and Prime95, and remained stable at 1.5 GHz. The frequency only climbed or dropped temporarily. These extreme test conditions are unlikely in routine use. Our review sample also retrieved its full performance after stopping the load programs. 3DMark proves this by achieving the same score after the stress scenario as after a cold start.

Max. Load
 36.7 °C
98 F
37.2 °C
99 F
29.2 °C
85 F
 
 37.2 °C
99 F
36.9 °C
98 F
26.4 °C
80 F
 
 24.2 °C
76 F
25.2 °C
77 F
25.2 °C
77 F
 
Maximum: 37.2 °C = 99 F
Average: 30.9 °C = 88 F
28.2 °C
83 F
43.7 °C
111 F
50.6 °C
123 F
24.8 °C
77 F
40.3 °C
105 F
45.6 °C
114 F
24.7 °C
76 F
25 °C
77 F
26 °C
79 F
Maximum: 50.6 °C = 123 F
Average: 34.3 °C = 94 F
Power Supply (max.)  50.4 °C = 123 F | Room Temperature 22 °C = 72 F | FIRT 550-Pocket
(+) The average temperature for the upper side under maximal load is 30.9 °C / 88 F, compared to the average of 30.3 °C / 87 F for the devices in the class Convertible.
(+) The maximum temperature on the upper side is 37.2 °C / 99 F, compared to the average of 35.4 °C / 96 F, ranging from 21.8 to 55.7 °C for the class Convertible.
(-) The bottom heats up to a maximum of 50.6 °C / 123 F, compared to the average of 36.5 °C / 98 F
(+) In idle usage, the average temperature for the upper side is 26.2 °C / 79 F, compared to the device average of 30.3 °C / 87 F.
(+) The palmrests and touchpad are cooler than skin temperature with a maximum of 25.2 °C / 77.4 F and are therefore cool to the touch.
(+) The average temperature of the palmrest area of similar devices was 29 °C / 84.2 F (+3.8 °C / 6.8 F).
Idle: keyboard unit
Idle: keyboard unit
Idle: underside
Idle: underside
Load: Keyboard unit
Load: Keyboard unit
Load: underside
Load: underside

Speakers

The speakers, controlled via Wave's MaxxAudio Pro ensure a sufficient sound spectrum. Although it particularly lacks rich basses, it is overall enough for some series sessions and YouTube videos.

dB(A) 0102030405060708090Deep BassMiddle BassHigh BassLower RangeMidsHigher MidsLower HighsMid HighsUpper HighsSuper Highs2043.345.240.841.143.32537.84041.636.537.83135.838.942.635.735.84035.338.642.833.135.35035.440.142.935.435.46339.641.743.73539.68036.84245.430.836.810037.242.646.731.637.212537.642.547.228.537.616039.744.349.128.239.720042.548.851.727.842.52504752.756.325.64731551.356.360.725.851.340050.755.860.823.850.750050.356.560.823.250.36305863.968.922.75880063.869.773.821.963.8100061.867.671.321.361.8125059.666.169.720.959.6160061.367.771.920.361.3200061.167.171.62061.1250054.46266.319.554.4315053.360.164.519.853.3400059.265.67019.759.2500054.36366.919.754.3630055.356.861.519.555.380005755.459.719.4571000053.154.758.619.253.11250048.855.659.71948.81600050.35963.619.150.3SPL70.776.780.93370.7N26.837.548.4226.8median 53.3median 56.8median 61.5median 20.9median 53.3Delta55.35.72.5535.335.132.931.831.83236.535.132.428.93328.936.328.848.32761.52752.924.860.92462.822.763.32269.521.267.82174.82075.919.472.718.97117.770.117.86917.671.817.668.117.671.417.673.717.670.417.571.617.671.617.669.617.459.717.583.630.662.51.5median 69.6median 17.84.62.4hearing rangehide median Pink NoiseDell Inspiron 15 5568Apple MacBook 12 (Early 2016) 1.1 GHz

Frequency diagram in comparison (check boxes above can be turned on/off!)
Rate 1: Pink Noise 100 % volume; Rate 2: Audio off

Energy Management

Power Consumption

Our 15-inch convertible is quite restrained during use. It consumes only 4.34 to 8.4 watts in idle mode. The power consumption of HP's Spectre x360 is almost twice as high. The other rivals show a similar behavior as our review sample. The Inspiron 15 demands up to 32.5 watts when we switch to load operation. With the exception of Acer's Aspire R14, the opponents' power consumption is considerably higher. The reason might be that the processor of our review sample throttles during load since a slower clock rate needs less energy.

Power Consumption
Off / Standbydarklight 0.26 / 0.8 Watt
Idledarkmidlight 4.34 / 7.5 / 8.4 Watt
Load midlight 30.4 / 32.5 Watt
 color bar
Key: min: dark, med: mid, max: light        Metrahit Energy
Dell Inspiron 15 5568
HD Graphics 520, 6500U, Toshiba THNSNK256GCS8
HP Spectre x360 15-ap012dx
HD Graphics 520, 6200U, Sandisk X300 SD7SN6S-256G-1006
HP Envy 15-w103ng x360
GeForce 930M, 6200U, Samsung SSD PM851 256 GB MZNTE256HMHP
Lenovo Yoga 510-15ISK
Radeon R7 M460, 6200U, Liteonit CV3-DE256
Acer Aspire R14 R5-471T-79GQ
HD Graphics 520, 6500U
Power Consumption
-45%
-13%
-20%
4%
Idle Minimum *
4.34
6.5
-50%
4.15
4%
4
8%
4
8%
Idle Average *
7.5
13.3
-77%
8.2
-9%
7.5
-0%
6.6
12%
Idle Maximum *
8.4
15.1
-80%
8.2
2%
8.1
4%
8.6
-2%
Load Average *
30.4
30.8
-1%
34.6
-14%
40.8
-34%
30.5
-0%
Load Maximum *
32.5
38.5
-18%
48
-48%
57.3
-76%
32.2
1%

* ... smaller is better

Battery Runtime

The new Inspiron 15 of the 5000 series has a 42-Wh lithium ion battery. The manufacturer states a runtime of up to 7.5 hours. We test this based on some practical scenarios.

The first test determines the maximum runtime. We set the brightness to minimum and run a read script via Battery Eater. The review sample shuts down after 7.5 hours and thus conforms to Dell's specification.

To achieve a more realistic runtime, we set the screen brightness to 150 cd/m² and simulate Internet browsing. Our review sample switches to standby after just 5 hours. Much better runtimes are seen in Acer's Aspire R14 with 7.5 hours and HP's Spectre with 7 hours in the same test.

Finally, we want to look at the minimum runtime during load. Here, we set the brightness to maximum and start Battery Eater's Classic test. Dell's Inspiron 5568 switches to standby after only 1.5 hours. Thus, it lags just behind the Lenovo Yoga 510 and approximately 20 minutes behind the HP Spectre x360.

Battery Runtime
Idle (without WLAN, min brightness)
7h 29min
NBC WiFi Websurfing Battery Test 1.3
4h 59min
Big Buck Bunny H.264 1080p
4h 58min
Load (maximum brightness)
1h 33min
Dell Inspiron 15 5568
HD Graphics 520, 6500U, Toshiba THNSNK256GCS8
HP Spectre x360 15-ap012dx
HD Graphics 520, 6200U, Sandisk X300 SD7SN6S-256G-1006
HP Envy 15-w103ng x360
GeForce 930M, 6200U, Samsung SSD PM851 256 GB MZNTE256HMHP
Acer Aspire R14 R5-471T-79GQ
HD Graphics 520, 6500U
Lenovo Yoga 510-15ISK
Radeon R7 M460, 6200U, Liteonit CV3-DE256
Battery Runtime
41%
33%
50%
24%
Reader / Idle
449
705
57%
730
63%
H.264
298
337
13%
WiFi v1.3
299
431
44%
398
33%
448
50%
335
12%
Load
93
113
22%
100
8%

Pros

+ fast response times
+ low noise level
+ large touchpad
+ solid build

Cons

- moderately bright screen
- short battery life
- 12-month warranty only

Verdict

In review: Dell Inspiron 5568. Test model provided by Dell Deutschland.
In review: Dell Inspiron 5568. Test model provided by Dell Deutschland.

To fulfil the requirements of a convertible, the device should be equipped with a good balance of performance, high-quality build and mobility. Apart from some minor exceptions, Dell accomplishes this in its new Inspiron 15 5568. The casing can stand up to the competition except for a few minor weaknesses. We found the good quality particularly positive. Only the display's back should be more robust, and the weight and its distribution should be improved in future. We do not have much criticism for the screen; however a slightly higher brightness would be welcomed. The next important criterion is performance readiness and response times in particular. Since Dell has exclusively installed high-performance hardware, our review sample could exhibit its strengths in the system benchmarks. However, this has an impact on temperature development. The heat is extremely tied to one side, and thus the Inspiron gets very hot in one place during permanent high load. Furthermore, the battery life is somewhat short, which is considerably longer in some opponents.

Users looking for a stylish, versatile and always ready to use convertible in a 15-inch size will find this in Dell's new Inspiron 5000 series.

Buyers who are not willing to spend 1000 Euros (~$1099) can also take a look at the 200 Euro (~$220) cheaper alternative of this lineup. The competition should not be neglected, either. An example to be mentioned is once again HP's Spectre x360 that represents an interesting option with a brighter screen, longer battery life, and lower overall weight.

Dell Inspiron 15 5568 - 07/19/2016 v5.1
Nino Ricchizzi

Chassis
84 / 98 → 86%
Keyboard
85%
Pointing Device
84%
Connectivity
43 / 80 → 54%
Weight
63 / 35-78 → 65%
Battery
80%
Display
82%
Games Performance
57 / 68 → 84%
Application Performance
87 / 87 → 100%
Temperature
87%
Noise
91%
Audio
62 / 91 → 68%
Camera
47 / 85 → 56%
Average
73%
79%
Convertible - Weighted Average

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> Notebook / Laptop Reviews and News > Reviews > Dell Inspiron 15 5568 Convertible Review
Nino Ricchizzi, 2016-07-24 (Update: 2018-05-15)