GPU Performance

The Surface Go features the integrated Intel HD Graphics 615 GPU, and here the advantage of going with a Core based Pentium over an Atom based model in the N Series of processors is more dramatic. The Intel HD 615 features the same 24 execution units as a standard U series Core product, but with a slightly lowered maximum GPU frequency of 850 Mhz compared to something like a Kaby Lake based Core i5 which would be around 1.1 GHz. Intel’s Mobile N Series offers only half the execution units in the Celeron models, and 18 in the Pentium Silver N5000.

We already saw some of this performance delta in the system tests, where PCMark showed somewhat dramatic swings comparing the Pentium Gold 4415Y with the Celeron N4100. Tasks which heavily favored the CPU were somewhat close, but those that leveraged the GPU for gaming or content creation showed a pretty large gain with the Pentium Gold.

Let’s not get ahead of ourselves though. Despite offering twice the execution units as an Atom based processor, this is still an integrated Intel GPU, and therefore it’s going to be slow. It just won’t be quite as slow as an Atom.

Since this is a very low-end GPU, we’ve only run it through our synthetic tests.


Futuremark 3DMark Fire Strike

Futuremark 3DMark Sky Diver

Futuremark 3DMark Cloud Gate

Futuremark 3DMark Ice Storm Unlimited

Futuremark 3DMark Ice Storm Unlimited - Graphics

Futuremark 3DMark Ice Storm Unlimited - Physics

3DMark offers several tests with varying levels of scene complexity, with Fire Strike as the most complex one we run on laptops, followed by Sky Diver, Cloud Gate, and then finally Ice Storm Unlimited which is a test that can also be run on smartphones and tablets.

What’s most interesting is in Fire Strike, if you compare the Kaby Lake based Surface Go with the Skylake based Surface Pro 4, the results are actually quite close. With such a complex scene, the GPU is really the limiting factor more than the CPU, and with both featuring a similar GPU with 24 EUs, the results are really similar, but once the scenes get less complex, the CPU is a larger portion of the task, and the performance drops off fairly dramatically. Ice Storm Unlimited is broken down into the GPU score and the Physics score, with the Physics score being more or less a CPU task, and as we saw on the previous page, the Core i5-6300U is about twice as fast.

Comparing these results to Atom though shows that even though Gemini Lake offers a processor which can meet or beat the Pentium Gold 4415Y, on the GPU side, the meager 12 EUs on Atom are a severe hinderance.


GFXBench 5.0 Aztec Ruins Normal 1080p Offscreen

GFXBench 5.0 Aztec Ruins High 1440p Offscreen

We’re moving over to the latest GFXBench version from Kishonti, which moves away from the OpenGL based tests they offered on Windows, to DirectX 12 with the Aztec Ruins scene. As such, our data is limited, but the results show that the GPU found in the Surface Go is more or less as good as those in higher priced Core offerings, with performance only slightly behind the Surface Pro 6, or even the Y series Apple MacBook Air.

GPU Conclusion

Although the CPU takes a beating when comparing Pentium Gold to Core, the GPU doesn’t suffer the same fate. With the same 24 EUs available as most of the U and Y series Core processors, performance is not hampered quite as much as it is on the CPU side. The overall boost frequency of the GPU is slightly lower compared to a Core i5-6300U, but don’t forget the Pentium Gold 4415Y is also a 6-Watt TDP, so that makes sense. Whereas comparisons on the CPU side with Intel’s latest Atom actually favor the Atom, on the GPU side the Core based Pentium in the Surface Go is much more powerful.

Storage Performance

Microsoft offers two storage offerings in the Surface Go, with the base model being just 64 GB of storage, and the higher tier model features 128 GB. The base model is also eMMC, compared to a true PCIe SSD in the 128 GB model, with the review unit featuring a Toshiba BG3 series. Microsoft moved to a BGA SSD on the Surface Pro in the last couple of models, and the Surface Go also goes with a BGA SSD. That does mean the PCIe interface is just two lanes, which will restrict maximum performance compared to a four-lane model.

The BGA SSD offers good read performance, but write performance with such a small drive takes a big hit. It would be interesting to see this compared to the eMMC version, but we’ve not had a change to test that one. Odds are it would be significantly less performant.

System Performance: Going for Gold Display Analysis: Mini PixelSense


View All Comments

  • cpkennit83 - Thursday, January 17, 2019 - link

    a 3ghz a76 based qualcomm soc should murder than pentium in recompiled apps while being decent in legacy code. Cant arrive soon enought Reply
  • cpkennit83 - Thursday, January 17, 2019 - link

    and at double battery life i should add. Plus it wouldnt require an additional modem chip Reply
  • prophet001 - Thursday, January 17, 2019 - link

    at 6 watts? Reply
  • jordanclock - Thursday, January 17, 2019 - link

    That's about a 50% bump in what the SD855 averages, according to Anandtech's quick review of the SD855 QRD. Roughly comparing the numbers, the SD855 isn't very far off in some of the raw numbers. But cpkennit83 is right that it will take apps being recompiled for arm64 to get real world numbers to match up. Reply
  • cpkennit83 - Thursday, January 17, 2019 - link

    the 855 does 2w in specint and 2.5w in specfp, so it should have plenty headroom. a 3ghz version with 512kb L2 in all cores would still be comfortably under 5w. Only problem is software. Reply
  • Prestissimo - Saturday, January 19, 2019 - link

    Reality of Windows on ARM is far from ideal. SD850 has shown to draw 8W on average on a 13.3" FHD IPS touchscreen, which is similar to 4.5W Core M (2C/4T) and only marginally more efficient than 15W Core U (4C/8T).

    Notebookcheck's numbers demonstrates Lenovo C630 (13" FHD, SD850, 60 Wh) measured 12 hours on a 60 Wh battery, while Dell XPS 13 9370 (13" FHD, i5-8250U, 52 Wh) with an even smaller battery recorded almost 11 hours with markedly better power consumption. Not counting factors like the fact that XPS has a far better screen, faster memory and storage all pointing to higher overall power consumption.
  • HStewart - Saturday, January 19, 2019 - link

    Yes - with latest 8th gen notebooks, it is even better now - but wait to Sunny Cove. But keep in mind Windows for ARM with real application (not apps) has far less performance. Reply
  • MrSpadge - Thursday, January 17, 2019 - link

    I wish it had a fully featured Kaby Lake-Y with turbo. That may be worth 100$ more for many, yet cost the same to produce. Reply
  • Prestissimo - Saturday, January 19, 2019 - link

    I think Intel Core i3 U would make a much better selection, Whiskey Lake i3-8145U for instance. Reply
  • Prestissimo - Saturday, January 19, 2019 - link

    Or Microsoft could team up with Apple and make a mid-range Surface with a 7nm SoC like the A12X Bionic, finally delivering great performance AND battery life on a tablet PC. Wouldn't that be something. Reply

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