AMD RyZen CPU Architecture for 2017

Discussion in 'PC Industry' started by fellix, Oct 20, 2014.

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  1. Kyyla

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    You can always swap the fan :p. It is going to break long before the lump of metal.
     
  2. entity279

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    Nope, you people dont get it. Performance and "quietness" is beautiful; when i see their color scheme in any PC pic, I instantly consider that PC prettier
     
  3. fehu

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  4. hoom

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    Vegan lives! :runaway:
     
  5. Arnold Beckenbauer

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    It's not really new, you can find some RR numbers in the GFX databank since august 9th.

    https://gfxbench.com/compare.jsp?benchmark=gfx40&did1=53156431&os1=Windows&api1=gl&hwtype1=iGPU&hwname1=AMD+Radeon(TM)+Vega+10+Mobile+Graphics&D2=Intel(R)+Core(TM)+i5-7260U+CPU+with+Iris(TM)+Plus+Graphics+640


    https://gfxbench.com/device.jsp?D=AMD+Ryzen+5+2500U+with+Radeon+Vega+Graphics&testgroup=overall

    Not true.
    >If you click on "Info", you will see:
    OpenCL API | gfx901
    OpenCL API | AMD Ryzen 5 2500U with Radeon Vega Graphics

    gfx901 = APU's gpu part = 11 Compute Units
    AMD Ryzen 5 2500U = CPU = 4C/8T = 8 CUs

    So: both R5 2500U and R7 2700U will have 11 CUs! Cool!
     
    #2485 Arnold Beckenbauer, Aug 23, 2017
    Last edited: Aug 23, 2017
  6. Kaotik

    Kaotik Drunk Member
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    Actually I'm pretty sure they will have 8 and 10 CUs as suggested by the names. I suspect that current ESs have all enabled regardless of the final configuration, or some reporting issue or something
     
  7. ToTTenTranz

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    Why?
    I'm not even sure the max. number of enabled CUs is 11, since I only saw that number on leaked slides for embedded APUs.. Technically there are 12 NCUs in there..
     
  8. Anarchist4000

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    Presumably because of the model numbers. Vega 8/10/56/64. Being an APU, cutting an extra NCU for yields makes sense.
     
  9. Arnold Beckenbauer

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    Possible, but:

    A10-9600P and A12-9700 have 6 CUs, but different GPU names: AMD Radeon™ R5 Graphics for A10-9600P and AMD Radeon™ R7 Graphics for A12-9700P (higher clocks).

    FX™ 9800P, A12-9800B and A12-9720P have both 8 CUs and AMD Radeon™ R7 Graphics.

    And about this ES: http://ranker.sisoftware.net/show_d...e8d9ff96ab8de5d8fe86bb9df89da090b6c5f8c0&l=en

    There is a roadmap with upto 16 Compute Cores and 12 Next Gen GFX Cores, you're right, https://www.3dcenter.org/news/neue-roadmaps-praezisieren-amds-2017er-prozessoren-planungen

    Somekind of FX Raven Ridge APU.
     
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  10. Clukos

    Clukos Bloodborne 2 when?
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    Uploaded some Battlefield 1 multiplayer gameplay (just got it with EA Access :)) with info about scaling with cpu cores/smt:

     
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  11. Grall

    Grall Invisible Member
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    DUDE.

    What DIMMs are those? :p Lol, they look so yummy. Are the colors in any way influenced by memory accesses/activity, temperature or anything as such, or what?
     
  12. Kaotik

    Kaotik Drunk Member
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    By the looks of them G.Skill TridentZ RGBs, just normal RGB coloring, don't know if there's any (3rd party or otherwise) app that would let you control them like that
     
  13. Clukos

    Clukos Bloodborne 2 when?
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    Yup they are the G.SKill RGB ones, they look even better up close. You can change pretty much everything, you can even sync them with music playing on the PC.



    I got them cheaper than the normal Trident Z ram so I can't complain :)
     
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  14. Clukos

    Clukos Bloodborne 2 when?
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    Comparing 7 different scenes as much like for like as I could do with the latest digital foundry video for RotTR:

    [​IMG][​IMG]
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    [​IMG][​IMG]
    [​IMG][​IMG]
    [​IMG][​IMG]
    [​IMG][​IMG]
    [​IMG][​IMG]

    Not that surprising to me, but 3466C14 memory with optimized timings makes all the difference for Ryzen.
     
    #2494 Clukos, Aug 25, 2017
    Last edited: Aug 25, 2017
  15. itsmydamnation

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    Lightman likes this.
  16. hoom

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  17. Clukos

    Clukos Bloodborne 2 when?
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    3200C14 with auto sub-timings vs 3466C14 with optimized sub-timings:



    The bottom line is that both speed and sub-timings make a difference for Ryzen, the combination of both is ideal, not sure what the impact is for Intel platforms.
     
    #2497 Clukos, Aug 26, 2017
    Last edited: Aug 26, 2017
  18. 3dilettante

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    There's a slide that offers a bit more information on Zen's MDOESFI coherence protocol.
    Above what was present in MOESI, the D state is defined as Dirty and listed as some kind of migratory sharing optimization.
    It may be that F is Forwarding, like in MESIF, but it's not clear if that is the case.
    That's taking AMD's protocol into a notably higher number of states than for its older architectures and Intel's, although short of the double digits of IBM's.

    The slide doesn't quite get into what it takes for a line to go into the D or F state.
    One possible interpretation is that AMD's protocol is trying to optimize the clean and dirty sharing paths. Under its MOESI protocol, there was some later wrinkles to the shared state, such as there being a little-discussed optimization for sharing where the requester got a shared line in the Owned state, and a potential state that was either in the caches or an intermediate directory/cache state that tried to optimize for sharing dirty lines that were to be modified shortly after (lock variables, etc).
    Perhaps this has taken those optimizations and made them more formal. Another possibility, if AMD's choice is more like IBM's philosophy, there is information baked into these states about locality or probability of sharing.

    Various reports indicate it doesn't need a new stepping, just a more recent production week like 25 or later.
    That might mean there's some other way to make a small change on-die, or it's related to something besides the masks like new tests or changes in configuration or the packaging. Since this seems so inconsistent even among older chips, it might be discarding dies that were passing validation when they shouldn't. That may explain why the highly binned Threadripper is supposedly immune despite having B1 stepping just like Ryzen, although other elements like packaging and fuses may be different as well.
     
  19. Clukos

    Clukos Bloodborne 2 when?
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    Forza Horizon 3 performance:

     
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  20. Malo

    Malo Yak Mechanicum
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    Looks like excellent multi-core usage in FH3.

    What is the SMT 1-8? Is your SMT turned off?
     
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