Notebookcheck

Schenker XMG U506 (Clevo P751DM) Notebook Review

Florian Glaser, Tanja Hinum (translated by Ariana Brodsky), 10/04/2015

Platform update. Slightly delayed, but they are here. As September draws to an end, the first notebooks based on Intel's Skylake architecture are arriving on the scene. Our first test device equipped with the new technology is the Schenker XMG U506, which has a bona fide desktop processor at its command. Is it time for the old CPUs to disappear?

For the original German review, see here.

At a first glance, hardly anything has changed since we tested the most recent XMG model. Visually, the XMG U506 is identical to its predecessor, the XMG U505 -- at least in terms of its design. However, there is one small difference between them; Schenker has included a USB 3.1 port with Thunderbolt 3 in the new model.

The biggest changes lie under the hood. Instead of a Z97 chipset (Wildcat Point) with a Haswell CPU, the new laptop has a Z170 chipset (Sunrise Point) with a Skylake CPU. Great: Thanks to the desktop technology, the processor can be replaced, which is seldom possible with mobile chip. Currently, Schenker has four models listed in their configurator. While the Core i7-6700K (4.0 to 4.2 GHz) and the Core i5-6600K that we had tested (3.5 o 3.9 GHz) both have a TDP of 91 watts, the Core i7-6700 (3.4 to 4.0 GHz) and the Core i5-6600 (3.3 to 3.9 GHz) are specified at 65 watts. Unfortunately, the latter lack multipliers that can be set by the user (a nice feature that simplifies manual overclocking). As of this article's publishing, the U506 does not support the manipulation of multipliers.

Schenker's update to the motherboard includes a modernization of the RAM modules. DDR4-RAM boasts of a considerably higher clock rate than the conventional DDR3 solution. This notebook is equipped with a 2400 MHz module from HyperX. Since each of the four RAM slots can handle up to 16 GB of memory, theoretically the laptop has a memory capacity of up to 64 GB. Few competitors offer two 2.5-inch slots and two M.2 slots that support PCI and NVM. Our test model comes with a 1000 GB HDD and an SSD with a capacity of 500 GB.

The wireless module, keyboard and operating system are also customizable. The same applies to the GPU: Depending on your budget, Schenker will equip their notebook with a GeForce GTX 970M or a GeForce GTX 980M. Of course, the graphics cards are up to the latest technological standards: both have Nvidia's G-Sync, which enables the device to generate a softer picture without image tearing. We scrutinized this new G-Sync technology in our review of the Asus G751. Currently, Schenker is offering only one display for their XMG U506. The 15.6-inch IPS panel (matte) has a resolution of 1920x1080 pixels. So far, 3K or 4K panels are not on offer.

We chose all the premium components, and our test device costs a hefty sum of 2800 Euros (~$3130). The XMG U506's most frugal configuration costs "only" 1749 Euros (~$1960).

Schenker XMG U506
Graphics adapter
NVIDIA GeForce GTX 980M - 8192 MB, Core: 1038 MHz, Memory: 2500 MHz, GDDR5, ForceWare 353.50
Memory
16384 MB 
, 2x 8 GB SO-DIMM DDR4-RAM (2400 MHz), 2 of 4 slots occupied, max. 64 GB
Display
15.6 inch 16:9, 1920 x 1080 pixel, LG Philips LP156WF6 (LGD046F), IPS, Full HD, glossy: no
Mainboard
Intel Sunrise Point Z170
Storage
Samsung SSD SM951 512 GB MZHPV512HDGL, 512 GB 
, PCIe-x4 SSD + Western Digital Blue WDC WD10JPVX-00JC3T0, 1000 GB HDD @5400 rpm, Slots: 2x M.2 (type 2280) with PCIe & NVMe support + 2x 2.5-inch
Soundcard
Realtek ALC892 @ Intel Sunrise Point PCH - High Definition Audio Controller
Connections
4 USB 3.0 / 3.1 Gen1, 1 HDMI, 2 DisplayPort, 1 Kensington Lock, 1 eSata, Audio Connections: Headphone, Microphone, Line-in, S/PDIF (7.1 out), Card Reader: MMC, RSMMC, SD, Mini SD, SDHC, SDXC, 1 Fingerprint Reader, 1 USB 3.1 type-C including Thunderbolt 3, 1 SIM card slot
Networking
Killer e2400 Gigabit Ethernet Controller (10/100/1000MBit), Intel Wireless-N 7265 (b/g/n), Bluetooth 4.0
Size
height x width x depth (in mm): 36 x 386 x 262 ( = 1.42 x 15.2 x 10.31 in)
Battery
82 Wh Lithium-Ion, 14.8V, P750BAT-8, 8 cell, 436 grams
Operating System
Microsoft Windows 10 Pro 64 Bit
Camera
Webcam: FHD (2 MP)
Additional features
Speakers: 2.0 Onkyo (Sound Blaster X-Fi MB5), Keyboard: 3 zones, Keyboard Light: yes, Power supply: 230 Watt, MS Office 365 Trial Version, Control Center, 24-36 Months Warranty
Weight
3.48 kg ( = 122.75 oz / 7.67 pounds), Power Supply: 900 g ( = 31.75 oz / 1.98 pounds)
Price
2786 Euro
Note: The manufacturer may use components from different suppliers including display panels, drives or memory sticks with similar specifications.

 

Control Center - System Program
Control Center - System Program
Control Center - Device
Control Center - Device
Control Center - Gaming
Control Center - Gaming
Flexikey
Flexikey

Case

The 15-inch notebook's case, P751DM, is a product of the Taiwanese expert gaming company Clevo. Since it is very similar to its predecessor, the P751ZM, we saw no need to write a new version of our "Case", "Connectivity" and "Input Devices" sections. More information on these is available in our review of the XMG U505. Except for a few minor details, the new barebone is more or less a clone of its predecessor.

Display

We are somewhat surprised that the manufacturer has chosen another Full HD panel for this device. This could be related to the G-Sync support, and/or the notebook's pre-production status. As well as the display, the BIOS, the pre-installed software and the fan control system may change by the time Schenker releases the final product.

273
cd/m²
264
cd/m²
289
cd/m²
283
cd/m²
298
cd/m²
294
cd/m²
258
cd/m²
252
cd/m²
275
cd/m²
Distribution of brightness
X-Rite i1Pro 2
Maximum: 298 cd/m² Average: 276.2 cd/m²
Brightness Distribution: 85 %
Center on Battery: 298 cd/m²
Contrast: 710:1 (Black: 0.42 cd/m²)
ΔE Color 5.26 | 0.4-29.43 Ø6.2
ΔE Greyscale 5 | 0.64-98 Ø6.4
83% sRGB (Argyll 3D) 55% AdobeRGB 1998 (Argyll 3D)
Gamma: 2.46

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Back to the display: Unfortunately, apart from the brightness, the LP156WF6 panel from LG Philips cannot keep up with the old AU Optronics B156HAN01.2. Since the XMG U506's black value is nearly twice as high (0.42 vs. 0.23 cd/m²), the panel manages a contrast of only 710:1 rather than 1087:1. The CalMAN software, which performs professional display evaluations, also revealed lower test scores for our current test device  in almost every discipline. The new panel falls short of its predecessor in terms of grayscale, gamma value, color accuracy and color saturation.

Schenker XMG U506
LG Philips LP156WF6 (LGD046F)
Schenker XMG P505 PRO
AU Optronics B156HAN01.2 (AUO12ED)
Schenker XMG U505
AU Optronics B156HAN01.2 (AUO12ED)
Schenker XMG A505
AU Optronics B156HAN01.2 (AUO12ED)
Screen
17%
17%
27%
Brightness middle
298
286
-4%
250
-16%
284
-5%
Brightness
276
274
-1%
245
-11%
275
0%
Brightness Distribution
85
85
0%
78
-8%
87
2%
Black Level *
0.42
0.24
43%
0.23
45%
0.23
45%
Contrast
710
1192
68%
1087
53%
1235
74%
Colorchecker DeltaE2000 *
5.26
3.84
27%
3.41
35%
2.46
53%
Greyscale DeltaE2000 *
5
5.06
-1%
2.88
42%
2.3
54%
Gamma
2.46 89%
2.4 92%
2.18 101%
2.32 95%
CCT
6965 93%
6165 105%
6445 101%
6393 102%
Color Space (Percent of AdobeRGB 1998)
55
59
7%
59
7%
60
9%
Color Space (Percent of sRGB)
83
91.1
10%
90.3
9%
92
11%

* ... smaller is better

However, the XMG U506 earns points for its stronger screen brightness. Instead of 245 cd/m², we measured an average of 276 cd/m². Unfortunately, this still is not bright enough to be ideal for outdoor use. Dark display content also reveals that the light is brighter in some areas than others. To be fair, backlight bleeding is a very common problem for many laptops.

CalMan: Grayscale
CalMan: Grayscale
CalMan: Grayscale (calibrated)
CalMan: Grayscale (calibrated)
CalMan: Saturation Sweeps
CalMan: Saturation Sweeps
CalMan: Saturation Sweeps (calibrated)
CalMan: Saturation Sweeps (calibrated)
CalMan: ColorChecker
CalMan: ColorChecker
CalMan: ColorChecker (calibrated)
CalMan: ColorChecker (calibrated)
Schenker XMG U506 vs. sRGB (83 %)
Schenker XMG U506 vs. sRGB (83 %)
Schenker XMG U506 vs. AdobeRGB (55 %)
Schenker XMG U506 vs. AdobeRGB (55 %)

As is typical of IPS panels, the display content remains stable from most angles. In order for the image to distort as a result of vertical angle adjustments, one would need to observe the screen from a very strange and uncomfortable position. The XMG U506's display content looks good, even from the extreme horizontal angles.

Outdoor Use
Outdoor Use
Viewing Angles
Viewing Angles

Performance

A quad-core CPU, a luxury GPU, 16 GB or DDR4 of RAM and a solid-state drive: With its array of premium components, the XMG U506 is aiming to ascend the performance podium. Not to spoil the surprise: The project was a success. However, whether the product is worth more than 2000 Euros (~$2250), is a question that each gamer will have to answer individually. The laptop's price-performance ratio falls far short of that of desktop PCs. It may be important to note that the high costs are also driven by the slumping value of the Euro, as well as Nvidia and Intel's dominance of the market. AMD often lacks equivalent alternatives, leaving the competition with an advantage that they exploit mercilessly.

Processor

The most important hardware update is indubitably the new Skylake architecture. While the older Haswell processors were manufactured at 22 nm, Intel's new generation of CPUs uses 14 nm technology (Broadwell). This new manufacturing technology promises better energy efficiency and lower CPU temperatures, which is particularly vital for notebooks, as these mobile devices are very compact and rely on battery power.

For gaming notebooks with thicker cases like the Clevo P751DM, the CPU's performance is of greater import. In this respect, Skylake did not quite knock our socks off. Yes, the per MHz performance has increased again, but we cannot speak of a spectacular jump in performance. Compared to the Core i5-4590 (Haswell), the Core i5-6600K is over 10% faster, but taking the clock difference of 200 MHz into consideration (3.3 to 3.7 vs. 3.5 to 3.9 GHz), the divergence is not particularly dramatic.

Single-Core Rendering
Single-Core Rendering
Multi-Core Rendering
Multi-Core Rendering
CPU & GPU Load
CPU & GPU Load

Compared to a quad-core mobile processor with Hyperthreading technology, the Core i5-6600K does not have it easy. Because the desktop CPU can only process four threads in parallel (rather than eight), other gaming laptops sprint past the XMG U506 in the configuration that we tested. Need an example? Even with its lower clock frequency (2.5 to 3.5 GHz), the Schenker XMG P505's Core i7-4710HQ runs about 10% faster in Cinebench R15's CPU Multi test. In the single CPU test, on the other hand, the Core i5-6600K wins by a margin of over 20%.

However, good single-core performance or not: If you want a processor that will withstand the test of time, we recommend one that is capable of using Hyperthreading technology. In the XMG U506's case, the i7-6700 and the i7-6700K are available options.

Cinebench R10 Rendering Single 32Bit
6188
Cinebench R10 Rendering Multiple CPUs 32Bit
21324
Cinebench R10 Shading 32Bit
6804
Cinebench R11.5 CPU Single 64Bit
1.88 Points
Cinebench R11.5 CPU Multi 64Bit
6.93 Points
Cinebench R11.5 OpenGL 64Bit
73.32 fps
Cinebench R15 CPU Single 64Bit
166 Points
Cinebench R15 CPU Multi 64Bit
601 Points
Cinebench R15 OpenGL 64Bit
123.34 fps
Help

Whether the P751DM Barebone can handle these stronger processor models is a different question. Under full load, even the Core i5-6600K reaches 100°C (212°F). Fortunately, in our normal set of benchmark tests, we did not observe any processor throttling. Depending on the core demands, the processor ran at 3.6 to 3.9 GHz. These are precisely the maximum clock rates listed by Intel.

The XMG U506 deserves some criticism for its 3D mode. As soon as we opened a graphics benchmark or a game, the CPU turbo deactivated itself entirely and did not reactivate until the next boot process. We assume this is a bug. Happily, the problem does not have much of an effect on the performance (the base clock rate is only 400 MHz below the maximum). More information on Intel's Skylake architecture is available in our in-depth article.

Cinebench R15
CPU Single 64Bit (sort by value)
Schenker XMG U506
Intel Core i5-6600K
166 Points ∼76%
Schenker XMG U505
Intel Core i7-4790S
150 Points ∼69% -10%
Schenker XMG P505 PRO
Intel Core i7-4710HQ
135 Points ∼62% -19%
Schenker XMG Prime
Intel Core i5-4590
146 Points ∼67% -12%
CPU Multi 64Bit (sort by value)
Schenker XMG U506
Intel Core i5-6600K
601 Points ∼14%
Schenker XMG U505
Intel Core i7-4790S
714 Points ∼16% +19%
Schenker XMG P505 PRO
Intel Core i7-4710HQ
660 Points ∼15% +10%
Schenker XMG Prime
Intel Core i5-4590
530 Points ∼12% -12%
Cinebench R11.5
CPU Single 64Bit (sort by value)
Schenker XMG U506
Intel Core i5-6600K
1.88 Points ∼77%
Schenker XMG U505
Intel Core i7-4790S
1.72 Points ∼70% -9%
Schenker XMG P505 PRO
Intel Core i7-4710HQ
1.55 Points ∼64% -18%
Schenker XMG Prime
Intel Core i5-4590
1.63 Points ∼67% -13%
CPU Multi 64Bit (sort by value)
Schenker XMG U506
Intel Core i5-6600K
6.93 Points ∼26%
Schenker XMG U505
Intel Core i7-4790S
7.78 Points ∼29% +12%
Schenker XMG P505 PRO
Intel Core i7-4710HQ
7.2 Points ∼27% +4%
Schenker XMG Prime
Intel Core i5-4590
5.92 Points ∼22% -15%

System Performance

The PCIe SSD definitely plays a part in the notebook's phenomenal system performance. 7064 points in PCMark 7 is the highest overall score that we have seen. As the table below shows, neither the XMG P505 nor the XMG U505 had a chance against our test device.

PCMark 7 Score
7064 points
Help
PCMark 7 - Score (sort by value)
Schenker XMG U506
GeForce GTX 980M, 6600K, Samsung SSD SM951 512 GB MZHPV512HDGL
7064 Points ∼82%
Schenker XMG U505
GeForce GTX 970M, 4790S, Plextor PX-G256M6e
6411 Points ∼75% -9%
Schenker XMG P505 PRO
GeForce GTX 980M, 4710HQ, Micron M600 MTFDDAV256MBF M.2
6054 Points ∼70% -14%
Schenker XMG A505
GeForce GTX 960M, 4720HQ, Micron M600 MTFDDAV256MBF M.2
6042 Points ∼70% -14%

Storage Devices

The device came with the 64-bit edition of Windows 10 Pro pre-installed on a 500 GB solid-state drive. Samsung's PCIe x4 model, SM951, takes the proverbial cake. While SATA III SSDs manage 500 to 550 MB/s at most in sequential tests, the Samsung SM951 flaunts its superiority with speeds of up to 1917 MB/s (read) and 1508 MB/s (write) in the AS SSD benchmark. Although the system's performance reading and writing small files hardly profits from the PCIe, our test device achieves an overall score of 2789 points - a new record.

Anything the user prefers not to store on the solid-state drive can be relocated to the secondary storage medium. Even though the 1 TB version of the Western Digital Blue only runs at 5400 RPM (rather than 7200), the drive climbs to over 110 MB/s - an admirable speed for an HDD.

Samsung SSD SM951 512 GB MZHPV512HDGL
Sequential Read: 1579 MB/s
Sequential Write: 1546 MB/s
512K Read: 1072 MB/s
512K Write: 1525 MB/s
4K Read: 45.13 MB/s
4K Write: 120.7 MB/s
4K QD32 Read: 346.8 MB/s
4K QD32 Write: 302.6 MB/s

Graphics Card

G-Sync
G-Sync

Since the P751DM case has to get by without Optimus technology (the Intel HD Graphics 530 is unusable), all graphic tasks are delegated to the dedicated chip. Nvidia's high-end GeForce GTX 980M and GTX 970M models have been around for a while, but their age is not an indication of their performance. Even at the end of 2015, the two models are still at the top of their game. Fresh breeze will not blow into the high-end arena until the release of the GeForce GTX 980, which is due in the coming weeks.

Great: Unlike most notebooks, the XMG U506 does not have the graphics chip soldered to the mainboard. Instead, it sits on an MXM 3.0 module.

3DMark 11 Performance
11079 points
3DMark Ice Storm Standard Score
151181 points
3DMark Cloud Gate Standard Score
19220 points
3DMark Fire Strike Score
8246 points
Help

Another advantage: The three digital display outputs (2x DisplayPort 1.2 & 1x HDMI 2.0) allow the user to connect three external displays. Depending on the resolution and the monitor, 60 or 120 Hz can fuel the displays. As long as the graphics card plays along, even at 3840x2160 pixels, display content runs as smooth as silk.

Speaking of power: With a GPU score of 9970 points in 3DMark's Fire Strike test, the XMG U506 behaves similarly to other GTX 980M notebooks, like the Schenker XMG P505. A GTX 970M equates to about 24% slower (7536 points in the XMG U505), and a GTX 960M falls behind by 56% (4418 points in the XMG A505). Clevo does not make any compromises when it comes to the GDDR5 video memory either. Eight GB for the GTX 980M and six GB for the GTX 970M: This deserves respect.

3DMark
1920x1080 Fire Strike Graphics (sort by value)
Schenker XMG U506
NVIDIA GeForce GTX 980M
9970 Points ∼25%
Schenker XMG P505 PRO
NVIDIA GeForce GTX 980M
9807 Points ∼24% -2%
Schenker XMG U505
NVIDIA GeForce GTX 970M
7536 Points ∼19% -24%
Schenker XMG A505
NVIDIA GeForce GTX 960M
4418 Points ∼11% -56%
1920x1080 Fire Strike Score (sort by value)
Schenker XMG U506
NVIDIA GeForce GTX 980M
8246 Points ∼31%
Schenker XMG P505 PRO
NVIDIA GeForce GTX 980M
8335 Points ∼31% +1%
Schenker XMG U505
NVIDIA GeForce GTX 970M
6644 Points ∼25% -19%
Schenker XMG A505
NVIDIA GeForce GTX 960M
4071 Points ∼15% -51%
3DMark 11
1280x720 Performance GPU (sort by value)
Schenker XMG U506
NVIDIA GeForce GTX 980M
12824 Points ∼25%
Schenker XMG P505 PRO
NVIDIA GeForce GTX 980M
12758 Points ∼25% -1%
Schenker XMG U505
NVIDIA GeForce GTX 970M
10064 Points ∼20% -22%
Schenker XMG A505
NVIDIA GeForce GTX 960M
5446 Points ∼11% -58%
1280x720 Performance (sort by value)
Schenker XMG U506
NVIDIA GeForce GTX 980M
11079 Points ∼35%
Schenker XMG P505 PRO
NVIDIA GeForce GTX 980M
11134 Points ∼36% 0%
Schenker XMG U505
NVIDIA GeForce GTX 970M
9629 Points ∼31% -13%
Schenker XMG A505
NVIDIA GeForce GTX 960M
5639 Points ∼18% -49%

Gaming Performance

The GeForce GTX 980M is more or less the only notebook model that can render 3840x2160 pixels smoothly at good quality settings. The resource-gobbling “Batman: Arkham Knight” aside, the XMG U506 always managed over 30 fps in the 4K setting - though “Metal Gear Solid V” and “Mad Max” sometimes failed to run fluidly.

Things look much better in Full HD (1920x1080 pixels). Here the GTX 980M easily masters even maximum detail settings and multiple anti-aliasing - a feat that cannot be expected of any other card apart from the GTX 970M (with certain limitations). If the game does stutter slightly, the fault lies with the developer and their sloppy code optimization (did someone say “Assassin's Creed Unity”?).

Note: All benchmarks and emissions tests were performed with the G-Sync deactivated.

low med. high ultra4K
Evolve (2015) 203.4157.483.573.2fps
Battlefield Hardline (2015) 166.4161.9109.870.6fps
Dirt Rally (2015) 458.4171.2134.176.262.7fps
Batman: Arkham Knight (2015) 141127785325fps
Metal Gear Solid V (2015) 59.959.959.959.936.9fps
Mad Max (2015) 212.8107.610034.5fps
World of Warships (2015) 198.4167.9146.2133.745.3fps
FIFA 16 (2015) 366.5293207.792.4fps

Emissions

System Noise

While most gaming notebooks definitely make themselves heard in 3D mode, the XMG U506 is not too loud, even under full load. A maximum of 45 dB(A) is still in the acceptable range, particularly as the notebook only emitted 33 to 43 dB(A) in the 3DMark 06 test (average: 38 dB(A)). Even though, one of the fans did tend to pulsate, the XMG U506 puts up a good show compared to the competition. Many notebooks reach over 40 dB(A) under medium load.

In idle mode, too, our test device's noise level is comfortably low. 31 to 32 dB(A) is hardly noticeable. Many devices have fans that turn on and off often enough to become irritating, but we did not observe that kind of behavior here. While executing simple tasks, the XMG U506 emits only 34 dB(A).

Noise Level

Idle
31 / 32.4 / 33.8 dB(A)
HDD
33.2 dB(A)
Load
37.6 / 44.8 dB(A)
  red to green bar
 
 
30 dB
silent
40 dB(A)
audible
50 dB(A)
loud
 
min: dark, med: mid, max: light   Voltcraft sl-320 (15 cm distance)
Schenker XMG U506
GeForce GTX 980M, 6600K
Schenker XMG P505 PRO
GeForce GTX 980M, 4710HQ
Schenker XMG U505
GeForce GTX 970M, 4790S
Schenker XMG A505
GeForce GTX 960M, 4720HQ
Noise
-6%
-4%
-5%
off / environment *
Idle Minimum *
31
30.4
2%
32
-3%
29.2
6%
Idle Average *
32.4
33.6
-4%
32.3
-0%
30.8
5%
Idle Maximum *
33.8
36.6
-8%
34.8
-3%
42.6
-26%
Load Average *
37.6
43.4
-15%
42
-12%
41.6
-11%
Load Maximum *
44.8
47.8
-7%
45.2
-1%
43.8
2%

* ... smaller is better

Temperature

Stress Test
Stress Test

Low noise emissions do have its drawbacks; generally, the low fan speed means worse heat management, as is the case here. When a CPU hits the 100°C mark (212°F, according to the CPUID HWMonitor) under full load despite throttling, even the quietest cooling system is of little value. Clevo, the barebone manufacturer, should let the fans run a little faster for the sake of cooling down the processor. Thankfully, we are less worried about the graphics card. The GeForce GTX 980M does throttle in our stress test (FurMark and Prime95 running simultaneously), but a maximum of 78°C (172.4°F) will not hurt anything, even over an extended period.

The hot inner workings of the laptop are only noticeable by the user in some areas. In idle mode, 3D mode, and everything in between, the palm rest always remains below 40°C (104°F). Only towards the back half of the case does the notebook reach seriously hot temperatures. It is a good idea not to rest the device on your lap while running computationally intensive programs like games. An average of 33°C (91.4°F) is neither praiseworthy nor poor.

Max. Load
 48.2 °C
119 F
49.7 °C
121 F
41.8 °C
107 F
 
 44.5 °C
112 F
47.9 °C
118 F
41.4 °C
107 F
 
 31.7 °C
89 F
38.6 °C
101 F
33.9 °C
93 F
 
Maximum: 49.7 °C = 121 F
Average: 42 °C = 108 F
60.5 °C
141 F
62.1 °C
144 F
52.3 °C
126 F
54.1 °C
129 F
51.8 °C
125 F
40 °C
104 F
30.8 °C
87 F
29.8 °C
86 F
32.4 °C
90 F
Maximum: 62.1 °C = 144 F
Average: 46 °C = 115 F
Power Supply (max.)  57 °C = 135 F | Room Temperature 22 °C = 72 F | Voltcraft IR-900
(-) The average temperature for the upper side under maximal load is 42 °C / 108 F, compared to the average of 32.9 °C / 91 F for the devices in the class Gaming.
(-) The maximum temperature on the upper side is 49.7 °C / 121 F, compared to the average of 39.2 °C / 103 F, ranging from 21.6 to 68.8 °C for the class Gaming.
(-) The bottom heats up to a maximum of 62.1 °C / 144 F, compared to the average of 41.6 °C / 107 F
(±) In idle usage, the average temperature for the upper side is 33.3 °C / 92 F, compared to the device average of 32.9 °C / 91 F.
(±) The palmrests and touchpad can get very hot to the touch with a maximum of 38.6 °C / 101.5 F.
(-) The average temperature of the palmrest area of similar devices was 28.7 °C / 83.7 F (-9.9 °C / -17.8 F).
Schenker XMG U506
GeForce GTX 980M, 6600K
Schenker XMG P505 PRO
GeForce GTX 980M, 4710HQ
Schenker XMG U505
GeForce GTX 970M, 4790S
Schenker XMG A505
GeForce GTX 960M, 4720HQ
Heat
8%
4%
-7%
Maximum Upper Side *
49.7
54.2
-9%
46.7
6%
56.4
-13%
Maximum Bottom *
62.1
59.4
4%
53.2
14%
61.8
-0%
Idle Upper Side *
36.8
30.8
16%
39.1
-6%
41.3
-12%
Idle Bottom *
38.7
31.1
20%
38.5
1%
40.2
-4%

* ... smaller is better

Speakers

For more information on the notebook's sound quality, we would like to refer you to our review of the XMG U505. Once again, Clevo has equipped the desktop replacement with a 2.0 system from Onkyo, which performed surprisingly well. The most important feature is probably the Sound Blaster X-Fi MB5 sound enhancement solution. Unfortunately, we were unable to test this software ("No supported audio devices are available").

Energy Management

Power Consumption

The missing graphics switching is particularly noticeable in the areas of battery life and energy consumption. An energy usage rate of 23.1 to 35.0 watts in idle mode is much higher than the 12.0 to 22.2 watts consumed by our test device's 15-inch sibling, the XMG P505.

Compared to the XMG U505, however, Schenker has made progress. A result of 32.8 to 48.3 watts reveals that the Haswell architecture needed far more energy than the new Skylake version - and that despite the fact that the Core i7-4790S has a lower TDP (65 vs. 91 watts). Our test configuration of the XMG U506 was more energy-efficient in 3DMark 06 as well - though just a tad, as the stronger graphics card exerts some influence here. Only in the stress test did the XMG U506's energy usage exceed that of the XMG U505.

Power Consumption
Off / Standbydarklight 0.1 / 0.5 Watt
Idledarkmidlight 23.1 / 27.6 / 35 Watt
Load midlight 110.2 / 237.2 Watt
 color bar
Key: min: dark, med: mid, max: light        Voltcraft VC 940
Schenker XMG U506
GeForce GTX 980M, 6600K
Schenker XMG P505 PRO
GeForce GTX 980M, 4710HQ
Schenker XMG U505
GeForce GTX 970M, 4790S
Schenker XMG A505
GeForce GTX 960M, 4720HQ
Power Consumption
30%
-21%
32%
Idle Minimum *
23.1
12
48%
32.8
-42%
11.2
52%
Idle Average *
27.6
17.8
36%
38.5
-39%
18.6
33%
Idle Maximum *
35
22.2
37%
48.3
-38%
26
26%
Load Average *
110.2
94.2
15%
111.9
-2%
100.2
9%
Load Maximum *
237.2
207.5
13%
202.7
15%
147.6
38%

* ... smaller is better

Battery Life

As previously mentioned, the XMG U506's battery life will not blow anyone away. Even when the computer has nothing to do and is set to minimum brightness, the 8-cell battery (82 Wh) only lasts for a maximum of 3.5 hours. The XMG P505 held out for five hours in the Battery Eater Reader's Test (the XMG U506 only managed 2.5 hours). For 3D applications, our test device lasts for only 1 to 2 hours.

Battery Runtime
Idle (without WLAN, min brightness)
3h 30min
Load (maximum brightness)
1h 53min
Schenker XMG U506
GeForce GTX 980M, 6600K
Schenker XMG P505 PRO
GeForce GTX 980M, 4710HQ
Schenker XMG U505
GeForce GTX 970M, 4790S
Schenker XMG A505
GeForce GTX 960M, 4720HQ
Battery Runtime
14%
-25%
31%
Reader / Idle
210
298
42%
150
-29%
352
68%
Load
113
96
-15%
89
-21%
105
-7%

Pros

+ three digital display outputs (4K @60 Hz)
+ moderately quiet
+ USB 3.1 including Thunderbolt
+ CPU and GPU can be switched out
+ up to four mass storage units
+ top-notch performance
+ individually configurable
+ 3-zone lighting
+ easy maintenance access
+ good input devices
+ high sound quality
+ skylake processor
+ DDR4 RAM
+ IPS panel
+ PCIe SSD
+ G-Sync

Cons

- higher energy consumption than standard gaming notebooks
- poor thermal management
- fragile soft-touch surfaces
- no CPU turbo in 3D applications
- throttling under full load
- short battery life
- heavy

Verdict

Schenker XMG U506, test device courtesy of Schenker Technologies
Schenker XMG U506, test device courtesy of Schenker Technologies

As expected, the XMG U506 has inherited both the strengths and the weaknesses of its predecessor. Anyone who does not mind toting a case that weighs 3.5 kg (~7.7 lbs) will get an incredibly powerful desktop replacement that can handle any task. Thanks to the innovative technologies at work in the device (Skylake, DDR4 RAM, G-Sync, etc.), the computer is well equipped for the more computationally intensive software that tomorrow is sure to bring.

However, there is a catch: The price. With good hardware, the XMG U506 costs 2000 to 3000 Euros (~$2250 to ~$3370). The device's thermal management and battery life could be better, and the quality of the case surfaces leaves something to be desired.

Otherwise, the case manufacturer Clevo does not make any gross mistakes. In almost every discipline, the P751DM Barebone achieved a score of over 80%, sometimes even 90%. The touchpad, backlit keyboard and IPS display, all made a good impression on us, and the upgrade options and connections are nothing to sneeze at (USB 3.1 with Thunderbolt 3). Clevo deserves praise for the good sound quality.

Overall, the XMG U506 is an extremely powerful high-end notebook designed for gamers who demand a lot from their system (and do not carry it around very often).

Schenker XMG U506 - 02/24/2016 v5
Florian Glaser

Chassis
72 / 98 → 73%
Keyboard
86%
Pointing Device
86%
Connectivity
60 / 81 → 74%
Weight
53 / 10-66 → 77%
Battery
63%
Display
86%
Games Performance
90%
Application Performance
97%
Temperature
72 / 95 → 76%
Noise
77 / 90 → 86%
Audio
85%
Average
77%
83%
Gaming - Weighted Average

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> Notebook / Laptop Reviews and News > Reviews > Archive of our own reviews > Schenker XMG U506 (Clevo P751DM) Notebook Review
Florian Glaser, 2015-10- 4 (Update: 2018-05-15)