New Zen microarchitecture details

Discussion in 'CPUs and Overclocking' started by Dresdenboy, Mar 1, 2016.

  1. Dresdenboy

    Dresdenboy Golden Member

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    To make it clear: I didn't want to see, what happens, if the OS doesn't schedule a second thread or a "sleeping" one to the same core. If more time becomes available, I might try to run an idling thread in the background.
     
  2. Abwx

    Abwx Diamond Member

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  3. inf64

    inf64 Platinum Member

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    AMD will supposedly demo Zen running DOOM on E3 today.
     
  4. cytg111

    cytg111 Diamond Member

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    Optimistic : Thats fantastic, cant wait to hear more.
    Pessimistic : Just shows its ISA compliant. Lets hope it doesnt crash.
     
  5. KTE

    KTE Senior member

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    Doom isn't CPU intensive and a benchmark even PD does far better than usual in.

    Sent from HTC 10
    (Opinions are own)
     
  6. itsmydamnation

    itsmydamnation Golden Member

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    its a well threaded benchmark doesn't mean it isn't CPU intensive
     
  7. DrMrLordX

    DrMrLordX Diamond Member

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    It's 8 pm in LA. Have they demoed Doom yet?
     
  8. The Stilt

    The Stilt Golden Member

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    Practically no :sneaky: :D
     
  9. frozentundra123456

    frozentundra123456 Diamond Member

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    He is correct though. It isnt cpu intensive at all. Or I suppose more accurately one can say it is gpu limited with almost any cpu.
     
  10. cytg111

    cytg111 Diamond Member

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    So they demoed a working sample of Zen that didnt crash running DOOM. It is not nothing.
     
  11. The Stilt

    The Stilt Golden Member

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    It would be pretty bad if final silicon did that D:
     
  12. Dresdenboy

    Dresdenboy Golden Member

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    BTW is it normal to have no labels on the ES chips at all? :sneaky:
     
  13. The Stilt

    The Stilt Golden Member

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    ALL of the lasering missing (completely blank)?
    I've had such production silicon, but they are for special purpose only. It can be used as a safety measure, since unless you have the right equipment and info, the CPU is nothing but a paper weight :sneaky:
     
  14. Dresdenboy

    Dresdenboy Golden Member

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    Yep, like this (from the video):
    [​IMG]
     
  15. The Stilt

    The Stilt Golden Member

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    Which video?
     
  16. Dresdenboy

    Dresdenboy Golden Member

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  17. The Stilt

    The Stilt Golden Member

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    Thanks.

    If you look where the lady is putting the trays into, it becomes pretty obvious why they are blank chips ;)

    Unfused and unmarked parts about to be fused and marked.
     
  18. Dresdenboy

    Dresdenboy Golden Member

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    OK, thanks. Interesting. Where can I get one? ;)

    AMD is giving unusual insights here.
     
  19. Doom2pro

    Doom2pro Senior member

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    Are they binned before that part or are they benched at that stage, then fused and labeled?
     
  20. therealnickdanger

    therealnickdanger Senior member

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    It would have been nice to see some details/metrics to go along with that video. Resolution? Quality? Frame rate?

    It's hard to believe how long it takes to go from "playing Doom" to shipping a product.

    https://youtu.be/y0Y7ScfaVHs
     
  21. Unoid

    Unoid Senior member

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    Thanks for adding to the conversation with insightful facts and knowledge.
     
  22. Arachnotronic

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    IBM's processes, including 14nm SOI, are typically quite exotic. The wafers tend to be expensive, yields aren't great, and so on. This is one of the reasons that IBM never really gained much traction as a general purpose foundry, and why they ultimately paid GloFo to take the fabs.

    GloFo, as part of a wafer supply agreement with IBM, will continue to run IBM's exotic processes in its newly acquired fabs for the POWER chips. But it is very unlikely that third party fabless customers will want in on the fabs.

    A good clue here is that in recent presentations around OpenPOWER, IBM and its partners have talked about POWER-derivative chips from partners being built by third party manufacturing houses rather than on IBM's old fabs now owned by GloFo.

    Anyway, no way AMD is going to use these expensive, low-yielding, and probably difficult to design for processes for future CPUs or GPUs.
     
  23. DrMrLordX

    DrMrLordX Diamond Member

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    22nm FDSOI is supposedly already cheaper per transistor (not necessarily taking into account design complexity) than various finFET processes from the "next generation" of nodes. It shouldn't take that long for yield issues associated with 14nm HP finFET to even out simply from repeated iteration, to the point where AMD could seriously consider it as a "step up" node to use after 14nm LPP.
     
  24. Glo.

    Glo. Golden Member

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    http://www.eetimes.com/author.asp?section_id=36&doc_id=1329887
    I suppose you have not read this article on the matter of production costs between processes.

    I think that AMD will use this(FD-SOI) process for both Zen AND Vega GPUs.
     
  25. Arachnotronic

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    I doubt it. See:

    http://www.globalfoundries.com/news...logy-success-for-next-generation-amd-products