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.

3DMark

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

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
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  • Impulses - Thursday, January 17, 2019 - link

    Huh, battery life isn't quite as bad as I thought it was, definitely well under average for the price but I'm still kind of attracted to the unique combination of form factor and capabilities... I don't need a full fledged laptop, but if I'm gonna carry around a convertible like this I'd definitely appreciate x86 compatibility and ease of storage handling vs something like a Chromebook or iPad.

    How fast can it charge via USB-C?
    Reply
  • Archwizard Snim - Thursday, January 17, 2019 - link

    I personally checked that USB-PD charging for Surface Go reaches 20V/1A at least, which I think is limited by my cable and charger (or portable battery, for that matter). I once read that the maximum power that goes through the USB-C port is 45W.

    Even with 20W portable power, however, it's fast enough and doesn't lose the battery even under heavy use. I never even had to worry about battery at all since I always carried the portable USB-PD compliant battery with me.
    Reply
  • Smell This - Thursday, January 17, 2019 - link

    For reference (and snits and giggles ... )
    The Bay Trail Preview: Intel Atom Z3770 Tested
    https://www.anandtech.com/show/7314/intel-baytrail...
    Reply
  • Konservenknilch - Thursday, January 17, 2019 - link

    I have the non-LTE version (SSD), very neat little device. Sure, it's not a desktop replacement like its larger siblings, but wonderfully portable and quite speedy. Reply
  • PeachNCream - Thursday, January 17, 2019 - link

    Interesting design. Screen bezels don't bother me. Thermal throttling, on the other hand, is an annoyance so I'd happily give up short burst performance for a more consistent experience even if that consistency is considerably slower as a result. That battery life though...I question how the words "unmatched mobility" can be given serious consideration alongside a device that can't even run as long as an old Atom n270-based netbook. Reply
  • TheinsanegamerN - Saturday, January 19, 2019 - link

    The short bursts you dislike help to maintain higher battery life numbers. Running slower over a longer period can often wind up using more power in the long run, its why intel started prioritizing turbo boost in the first place. Reply
  • drexnx - Thursday, January 17, 2019 - link

    intel needs to stop being ridiculous with their segmentation and let the lower end core stuff turbo in some way, otherwise their (now excellent) atoms will walk all over the bigger cores as we see here Reply
  • Eris_Floralia - Thursday, January 17, 2019 - link

    It's hilarious to see Gemini Lake beats Pentium-Y at the same TDP.

    Lakefield's gonna be very interesting in this area.

    Same goes to their Tremont Atoms, if they don't put gimped iGPU in it anymore.

    Hopefully AMD is catching up with their newer optimized Raven Ridge.
    Reply
  • cpkennit83 - Thursday, January 17, 2019 - link

    I assume Gemini at 2.4ghz must be drawing more power than kaby lake at 1.6ghz in the single threaded tests. The 1.6ghz no turbo harness is retarded and even being a lower bin, kaby must be very frugal so far from its upper potential limits. Reply
  • The_Assimilator - Friday, January 18, 2019 - link

    > Lakefield's gonna be very interesting in this area.

    Oh yes. Lakefield absolutely cannot come soon enough.
    Reply

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