AMD Vega 10, Vega 11, Vega 12 and Vega 20 Rumors and Discussion

Discussion in 'Architecture and Products' started by ToTTenTranz, Sep 20, 2016.

  1. Pressure

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    Does a normal GTX 1080 run at 1870 Mhz core and 1450 Mhz memory?

    Also 32GB versus 8GB memory. Maximum Turbo Clock at 4.9Ghz versus 4.0Ghz
     
  2. AlexFromAU

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    Oops, I linked the GTX 1080 benchmark instead of the Vega one by accident... the GTX 1080 benchmark has the 6700K overclocked to hell and back so I'd ignore that physics score.

    You can see Vega benchmark here: http://www.3dmark.com/compare/3dm11/12256169
     
  3. DavidGraham

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    Yeah, it boosts to even higher than that, memory is slightly overclocked though (about 600Mhz more, from the default of 11gbs). As for the CPU, it doesn't affect the graphics score much.
     
  4. seahawk

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    Maybe, the TBR rasterizer depends on the use of primitive shaders.

    To quote the article: "The new programmable geometry pipeline on Vega will offer up to 2x the peak throughput per clock compared to previous generations by utilizing a new “primitive shader.” This new shader combines the functions of vertex and geometry shader and, as AMD told it to me, “with the right knowledge” you can discard game based primitives at an incredible rate. This right knowledge though is the crucial component – it is something that has to be coded for directly and isn’t something that AMD or Vega will be able to do behind the scenes."

    https://www.pcper.com/reviews/Graph...w-Redesigned-Memory-Architecture/Primitive-Sh
     
  5. gamervivek

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    Hope to see FS results soon rather than more 2011 720p benchmarks, does ~15% better than the 1080FE here, so hopefully it can extend it further on FS benches.
     
  6. Clukos

    Clukos Bloodborne 2 when?
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  7. ToTTenTranz

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    I haven't seen the video yet, but that Doom result shows the same IPC as Fiji within a rather small margin of error, not lower.
     
  8. Clukos

    Clukos Bloodborne 2 when?
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    It trails the Fury X in several tests

    [​IMG]
    [​IMG]
    [​IMG]
     
  9. Geeforcer

    Geeforcer Harmlessly Evil
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    How did they equalize the memory bandwidth?
     
  10. Malo

    Malo Yak Mechanicum
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    They didn't, the Fury X retains the slightly higher bandwidth, which likely accounts for the slight advantage to FuryX. So normalizing the bandwidth and the results, likely they're basically identical performance at the same clocks.
     
  11. gamervivek

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    So there's still hope for gaming drivers next month that give it a nudge further, if AMD can get it to 20% over a 1080FE it'd be a decent buy. Power consumption is still a worry though.
     
  12. ToTTenTranz

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    It's practically the same scores between one card and another, save for that AOTS benchmark, for which they state the following:

    Sure there are some differences, but Vega also has less raw memory bandwidth so it could be coming just that.
    When the 32CU Tonga was compared to 32CU Polaris 10 there was a clear advantage from GCN3 to GCN4. But here we see almost zero difference between Fiji's GCN3 and Vega's "GCN5"?


    It sure looks like it's just running Fiji's driver path in some kind of fallback/compatibility mode.
    And it also doesn't seem to me that Vega's architectural advantages are broken in the hardware, because if we look at the specviewperf scores with normalized clocks:

    [​IMG]


    Here we see 15% to 670% boosts at the same clocks, but in gaming this translates to nothing?
    I don't buy it.
     
  13. Malo

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    Architecture changes for packed math, like dual rate fp16. None of those hardware additions affect gaming (yet) which is all fp32.
     
  14. ToTTenTranz

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    Dual rate FP16 would never result in 6.8x more performance. And according to the author, this particular snx-02 test measures vertex performance.
    Besides, is FP16 being used in 3D art software like 3DSMax and Maya, both showing close to 30% boosts on same clocks? And 3D CAD design like solidworks and Catia showing 50-100% boosts?
     
  15. Geeforcer

    Geeforcer Harmlessly Evil
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    "Pro-ish" vs "Normal" drivers... Plus only a 1/4 memory, which someone once told me was super-important in pro apps.
     
  16. seahawk

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    On the other had it could be that the FE enjoys some driver advantages over Fiji in the pro applications.
     
  17. ToTTenTranz

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    Whoever told you that was right and it probably referred to many professional user's real-world environments, but not for all benchmarks in specviewperf 12.
    For example, the Maya 04 benchmark sees only a small boost between Pro and gaming graphics cards:

    [​IMG]

    Yet in this benchmark, Vega FE sees a 40% improvement over Fury X, clock-for-clock.
     
  18. Pressure

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    What about the relative small increase from the 550 MHz difference (~34%) between Vega FE at 1050 MHz to 1600 MHz.
     
  19. Geeforcer

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    Seems like a safe bet, considering these FirePro W5100 results in snx-02/sw-03

    upload_2017-7-5_13-3-44.png
     
  20. Geeforcer

    Geeforcer Harmlessly Evil
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    It's the drivers in other cases. In snx-02, which you specifically brought up, the mighty W5100 outperforming Fury 2.5x.
     
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