Compute Performance

Shifting gears, we'll look at the compute aspects of the Radeon VII. Though it is fundamentally similar to first generation Vega, there has been an emphasis on improved compute for Vega 20, and we may see it here.

Beginning with CompuBench 2.0, the latest iteration of Kishonti's GPU compute benchmark suite offers a wide array of different practical compute workloads, and we’ve decided to focus on level set segmentation, optical flow modeling, and N-Body physics simulations.

Compute: CompuBench 2.0 - Level Set Segmentation 256

Compute: CompuBench 2.0 - N-Body Simulation 1024K

Compute: CompuBench 2.0 - Optical Flow

Moving on, we'll also look at single precision floating point performance with FAHBench, the official Folding @ Home benchmark. Folding @ Home is the popular Stanford-backed research and distributed computing initiative that has work distributed to millions of volunteer computers over the internet, each of which is responsible for a tiny slice of a protein folding simulation. FAHBench can test both single precision and double precision floating point performance, with single precision being the most useful metric for most consumer cards due to their low double precision performance.

Compute: Folding @ Home (Single and Double Precision)

Next is Geekbench 4's GPU compute suite. A multi-faceted test suite, Geekbench 4 runs seven different GPU sub-tests, ranging from face detection to FFTs, and then averages out their scores via their geometric mean. As a result Geekbench 4 isn't testing any one workload, but rather is an average of many different basic workloads.

Compute: Geekbench 4 - GPU Compute - Total Score

Lastly, we have SiSoftware Sandra, with general compute benchmarks at different precisions.

Compute: SiSoftware Sandra 2018 - GP Processing (OpenCL)

Compute: SiSoftware Sandra 2018 - GP Processing (DX11)

Compute: SiSoftware Sandra 2018 - Pixel Shader Compute (DX11)

 

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  • Dr. Swag - Thursday, February 7, 2019 - link

    If I had to guess, those tests probably are more dependent on memory capacity and/or memory bandwidth. Reply
  • Klimax - Friday, February 8, 2019 - link

    Could be still difference between AMD's and Nvidia's OpenCL drivers. Nvidia only fairly recently started to focus on them. (Quite few 2.0 features are still listed as experimental) Reply
  • tipoo - Thursday, February 7, 2019 - link

    That they changed the FP64 rate cap entirely in BIOS makes me wonder, should the iMac Pro be updated with something like this (as Navi is supposed to be launching with the mid range first), if it would have the double precision rate cap at all as Apple would be co-writing the drivers and all. Reply
  • tvdang7 - Thursday, February 7, 2019 - link

    I feel AT needs to update the game list. I understand that these are probably easier to bench and are demanding but most of us are curious on how it performs on games we actually play. Lets be real how many of you or your friends play these game on the daily? BF1 and MAYBE GTA are popular but not on the grand scheme of things . Reply
  • Manch - Thursday, February 7, 2019 - link

    7 DX 11
    1 DX 12
    1 Vulcan

    Need a better spread of the API's and denote which games are engineered specifically for AMD or Nvidia or neither. I think that would be helpful when deciding which card should be in your rig.
    Reply
  • TheinsanegamerN - Thursday, February 7, 2019 - link

    Perhaps tell game developers to get with the times then? You cant test what isnt there, and the vast majority of games with repeatable benchmarks are DX11 titles. That is not Anandtech's fault. Reply
  • Manch - Friday, February 8, 2019 - link

    Didn't say it was. Merely a suggestion/request. There are around 30 games that are released with DX 12 support and about a dozen with Vulkan. Some of the DX 11 titles tested for this review offer DX 12 & Vulkan supt. They exist and can be tested. If there is a reason to NOT test a DX version or Vulkan version, for example RE2's broken DX12 implementation, OK fair enough. I think it would offer a better picture of how each card performs overall. Reply
  • Manch - Friday, February 8, 2019 - link


    DX11 DX12 Vulkan
    BF1 Tested Yes No
    FC5 Tested No No
    AotS Yes Tested Yes
    Wolf Yes Yes Tested
    FF Tested Maybe? No
    GTA Tested No No
    SoW Tested No No
    F1 Tested No No
    TW Tested Yes No

    4 of the games tested with DX11 have DX 12 implementations and AotS has a Vulkan implementation. If the implementation is problematic, fair enough. Put a foot note or a ** but there are games with DX 12 and Vulkan out there on current engines so it can be done.

    Ryan, perhaps and article on the games, the engines, their API implementations and how/why you choose to use/not use them in testing? Think it would be a good read.
    Reply
  • Manch - Friday, February 8, 2019 - link

    Sorry bout the format didn't realize it would do that to it. Reply
  • eddman - Friday, February 8, 2019 - link

    "about a dozen with Vulkan"

    What are these dozen games? Last time I checked there were only three or four modern games suitable for vulkan benchmarking: Wolfenstein 2, Doom, Strange Brigade and perhaps AotS.

    IMO Wolfenstein 2 is enough to represent vulkan.

    "Wolf Yes Yes Tested"

    Wolfenstein 2 is vulkan only; no DX12.

    As for DX12, yes, I too think they could add more.
    Reply

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