Article: Windows 8.1 vs 10 graphics performance analysis

Discussion in 'Frontpage news' started by Hilbert Hagedoorn, Jul 30, 2015.

  1. eXXon

    eXXon Guest

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    These results are a bit inaccurate. I think you'll see a bigger difference with an average system (i.e. an i5/8320 coupled with a mid range GPU), IMO.
     
  2. Redemption80

    Redemption80 Guest

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    Why would you see a difference with an "average" system?

    Nice article, glad to see no performance degradation in DX11 games which at the moment is the most important thing.
     
  3. theoneofgod

    theoneofgod Ancient Guru

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    Why?
     
  4. Loophole35

    Loophole35 Guest

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    Because it's not the results that he wanted to see.
     

  5. theoneofgod

    theoneofgod Ancient Guru

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    I didn't expect DX11 improvements with WDDM 2.0, the fact that AMD made CPU overhead optimizations first on the Windows 10 driver was interesting but it wasn't limited to WDDM 2.0 but WDDM 1.3 and lower.
    It's good to see they didn't make things worse :)
     
  6. iTile

    iTile Member

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    [​IMG]

    says a lot..
     
  7. theoneofgod

    theoneofgod Ancient Guru

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    What driver was installed on 8.1? Looks to me like you weren't running >= 15.7 which had the CPU overhead optimizations that they now have.
     
  8. xIcarus

    xIcarus Guest

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    Guys please include spoiler tags or links when posting or quoting images. The page looks weird.
    And I feel the need to scroll sideways continuously.
    MUST NOT SCROLL.

    That's exactly what I was thinking about. I'm not surprised there's no magic stick for the Fury.

    Now we wait for DX12.
     
  9. thatguy91

    thatguy91 Guest

    I was going to say the same thing! I have higher draw calls per second under DirectX 11 on my rig (R9-280x with an i5-3570K) in Windows 10. That is running the latest 15.7.1 driver. That is both for single and multi-threaded (around 1100000 for both).

    Here's mine (screenshot):
    [​IMG]

    Keep in mind I have an older CPU, and a lower end video card. My results for DirectX 11 and 12 should be less than yours...
     
    Last edited by a moderator: Jul 31, 2015
  10. theoneofgod

    theoneofgod Ancient Guru

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    CPU overclocked?
     

  11. thatguy91

    thatguy91 Guest

    Yes, to 4.3 GHz (compared to his 4.0 GHz). Still, that won't equal 20 percent higher DX 11 draw calls, especially considering mine is an i5-3570K and his is an i7-4790K.

    The i7-4790K at the same clock speed should still be a little faster in the draw call test all things considered, seeing as it does have higher IPC. That is, assuming the CPU makes that much difference (I presume it does).

    Even if it is only 5 percent faster, you would effectively be comparing 4.2 GHZ to 4.3 GHz (if that makes sense), which wouldn't be a 20 percent gain! Especially comparing a R9-290 to a R9-280X as well.
     
    Last edited by a moderator: Jul 31, 2015
  12. theoneofgod

    theoneofgod Ancient Guru

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    I wonder what resolution they used.
    The CPU IPC is very important in the test.
     
  13. thatguy91

    thatguy91 Guest

    It should be the same resolution, 1280x720. It's an overhead test, not a graphics resolution test!

    Even with IPC being important, that further highlights that the i7-4790K should at 4.0 GHz should be at minimum, no less than the i5-3570K at 4.3 GHz.
     
  14. theoneofgod

    theoneofgod Ancient Guru

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    The i7-4790K can boost to 4.4GHz.
     
  15. heffeque

    heffeque Ancient Guru

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    Not surprised either. Who actually thought that Dx11 performance would change from Win8.1 to Win10?

    The real difference comes with Dx12 vs Dx11, where Dx12 hardware will shine against older Dx11 hardware, and where CPU performance will be a bit less important than with Dx11. That's what AMD is talking about their "magic" stick, their underpowered CPUs will be able to shine better in games thanks to Dx12 (even more the APUs).
     

  16. theoneofgod

    theoneofgod Ancient Guru

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    DX11 hardware supports DX12 give or take some Intel iGPU's (not up to date wth AMD APU's).
    The improvements will come from the low level API.
    I don't know anyone that expected DX11 improvements with Windows 10.
     
  17. heffeque

    heffeque Ancient Guru

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    I'm pretty sure that AMD's APUs will do a lot better in Dx12 than Intel's iGPUs since AMD's APUs have more Dx12 HW accelerated instructions than Intel's iGPUs. Intel will have to do more stuff on CPU than AMD.
    On external GPUs the story changes obviously.
    Well... check this post: http://forums.guru3d.com/showpost.php?p=5132768&postcount=12
     
  18. theoneofgod

    theoneofgod Ancient Guru

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    Of course GCN based APU's will benefit a lot from DX12 because of the feature level and extra optional function support.

    That doesn't say much. They're just doing what they enjoy doing.
     
  19. thatguy91

    thatguy91 Guest

    Much of the DirectX 11 improvements are AMD driver improvements apparently, which I guess you could consider as being official as of 15.7.1. Of course, one would expect some of this is due to the updated DX11 system libraries though. Additionally, there will probably be further improvements to this in the future, although maybe not to the same amount.

    So, the i7-4790K boosts to 4.4 GHz? So, how come my i5-3570K+R9-280X under Windows 10 at 4.3 GHZ, has 20 percent higher draw call performance compared to the i7-4790K boosting to 4.4 GHz (not forgetting it has higher IPC anyway)? The only reasonable answer would be that the test wasn't done using 15.7.1.

    I wholeheartedly refute the claim that the driver overhead reduction by AMD is a myth. It's likely that this claim is a result of sore NVIDIA users who have yet to get a proper Windows 10 driver :D.
     
    Last edited by a moderator: Jul 31, 2015
  20. theoneofgod

    theoneofgod Ancient Guru

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    That's what I said originally :)
     

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