AMD Zen 2: Production yields for Ryzen 3000 Dies at 70 percent

Discussion in 'Frontpage news' started by Hilbert Hagedoorn, Apr 22, 2019.

  1. Hilbert Hagedoorn

    Hilbert Hagedoorn Don Vito Corleone Staff Member

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  2. Fox2232

    Fox2232 Ancient Guru

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    "roughly 70 percent of the chips are fully functional" ...
    This means that from remaining 30% with some form of defect, some are salvaged to lower core count products and some are dead. Not bad at all for price competitiveness.
     
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  3. Clawedge

    Clawedge Ancient Guru

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    My body is ready!!!


    And here is Intel
    [​IMG]
     
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  4. Clae

    Clae New Member

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    Just wanted to write that if threadripper uses 2 Zen2 dies, then wouldn't the yield be 0.7*0.7? Still better than Intel.
     

  5. djmcave

    djmcave Member

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    I'm assuming they can test them out before assembling the dies together.. so you would only assemble healthy dies, so only the 0.7 yield matters.
     
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  6. Kool64

    Kool64 Maha Guru

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    It will be like Christmas in June/July when these chips are released. I can't wait.
     
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  7. FrostNixon

    FrostNixon Master Guru

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    Those CPUs can't come soon enough, the R5 2400g is not made for what I do to it...
     
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  8. icedman

    icedman Maha Guru

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    Even at 70% wouldnt they still yield more good chips per wafer as theoretically on 7nm you are already making more chips on each wafer so 70% should still be a great number
     
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  9. Undying

    Undying Ancient Guru

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    Still couple months away i guess. Have some time save up for an upgrade.
     
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  10. Fox2232

    Fox2232 Ancient Guru

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    Those 70% are fully functional. (As of no locking of CPU cores needed or plain dead die.)
    => fully working 8C/16T
     
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  11. JamesSneed

    JamesSneed Ancient Guru

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    Exactly which we can also assume they have much better than 70% yields for 4-6 core chiplets. If true this is a good sign for early 7nm production.
     
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  12. schmidtbag

    schmidtbag Ancient Guru

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    In terms of total quantity, yes, there should be more functional dies per 7nm wafer. Not only is this because the transistors are roughly half the size, but you have to consider the wafers are circular. When you decrease the area of each die, you can use up more of the entire wafer. For example:
    [​IMG] [​IMG]
     
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  13. chispy

    chispy Ancient Guru

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  14. Aura89

    Aura89 Ancient Guru

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    Depends on the size of the actual chip, which, i'll be honest, is a little confusing as of yet

    7nm itself doesn't make anything better if they increase the size of the die

    What is confusing is the fact that this article states a core for zen 2 being estimated at 88 mm²

    This is confusing because i hope that would be the module (Zeppelin?), not core, as the core of Zen core is 7 mm²

    SOOO...i'm going to assume they mean the module/zeppelin, in which case, it appears it'll be quite a bit smaller, since current Zen ones are 212.97 mm², or 190, some conflicting information out there
     
    Last edited: Apr 22, 2019
  15. schmidtbag

    schmidtbag Ancient Guru

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    I've considered pointing this out myself, but I'm sure the overall core-per-core architecture size is roughly the same as last gen parts (if they were the same transistor size). There's likely some new features here and there, while maybe some might be offloaded onto the central hub for the chiplet design. Either way, we're going from 14nm or 7nm, so even if each die were significantly larger (like by 25%, for example), the transistors are ostensibly half the size, so you're still going to fit more dies per wafer. As for whether that means the 10% decrease in yield will make up for the additional dies, I'm not sure and I don't care to do the math to figure that out haha.
     
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  16. marian4q

    marian4q Member

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    I remember AdoredTV analisis on yields and die size and how this would enable AMD be ahead in that area. AS I thinkk AMD small resource, this IS the way to go, the only way and the smartest.
     
  17. Kaleid

    Kaleid Ancient Guru

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    Here's hoping for 8 cores to be able to do at least 4.5Ghz
     
  18. koniu

    koniu Member Guru

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    I read somewhere that 7nm core part of Zen2 is 88mm2 or 78mm², not sure what is true
     
  19. Astyanax

    Astyanax Ancient Guru

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    its the size of the module

    also, didn't amd rename them from CCX's this Uarch? its slipped my mind what they changed the X to.
     
  20. DeskStar

    DeskStar Maha Guru

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    NOICE....!!
     

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