Radeon Vega 20 Will Have XGMI Interconnect

Discussion in 'Frontpage news' started by Hilbert Hagedoorn, Sep 6, 2018.

  1. Hilbert Hagedoorn

    Hilbert Hagedoorn Don Vito Corleone Staff Member

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    It's expected that VEGA20, when released, will get a new interface called XGMI, this is a high speed interconnect and can be seen along the ones of NVLINK, a much faster connector. Thanks to a new ...

    Radeon Vega 20 Will Have XGMI Interconnect
     
  2. Clawedge

    Clawedge Ancient Guru

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    XGMI.....I thought it was some new sort of sex thing.
     
  3. Spider4423

    Spider4423 Active Member

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    It can be... gigitty
    Looks like SLI/Crossfire is back in a new form
     
  4. Fox2232

    Fox2232 Ancient Guru

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    Not surprising, AMD slides shown infinity fabric between CPU, APU and GPU.
     
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  5. icedman

    icedman Maha Guru

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    Will be nice if this connection can finally show multiple gpu's as if they where one at a hardware level eliminating the need for software implementation in multi GPU.
     
  6. Fox2232

    Fox2232 Ancient Guru

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    Not enough to make 2 cards into one. Same issue as with nVLink. But likely good enough to do massive linking of 2 GPUs on one PCB... similar to connection between 2 CPU sockets.

    But I would rather seen MCM solution, there you do not need to pretend or overrides.
     
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  7. cryohellinc

    cryohellinc Ancient Guru

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    ...and I can bet the connector won't cost 80 euro either.
     
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  8. HWgeek

    HWgeek Master Guru

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    Can it overcome the bad support of CF for games? or only Game Dev can?
     
  9. AlbertX

    AlbertX Member

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    Does it Really matter? I am a Huge SLI/CF supporter but the games are just nos supporting SLI anymore, is declining more and more, the only recent title I can think supports sli is FC5 nothing else
     
  10. Barry J

    Barry J Ancient Guru

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    my last two rigs were sli but when I moved to the 1080ti I said no more due to poor game support
     

  11. Denial

    Denial Ancient Guru

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    For gaming, probably not.. but Vega is also used in datacenter products and in those applications it matters big time.
     
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  12. Amx85

    Amx85 Master Guru

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    if has 4096-bit HBM2 higher clocks on VRAM/GPU and lower power draw, is that really matters now, Nvidia is over 50% higher performance per watt

    greetings
     
  13. Fox2232

    Fox2232 Ancient Guru

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    Comparing 2 unreleased chips/architectures. Should we laugh or cry?
     
  14. Barry J

    Barry J Ancient Guru

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    If that's what AMD has got lets hope it make a huge difference as the GPU market really needs AMD maybe there not interested in high end and hope to dominate the mid range
     
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  15. Brisse

    Brisse Active Member

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    This feature is mainly for enterprises running deep learning software, and Vega20 itself is also an enterprise focused product which I don't think will be released for the gaming market.
     
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  16. Amx85

    Amx85 Master Guru

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    im comparing actual GTX1080Ti to actual VEGA lol and expecting, VEGA20 :rolleyes:
     
  17. reix2x

    reix2x Master Guru

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    I really think that we cannot expect anything from AMD at least for 2 years, i hope Navi architecture will be created from ground up... a very influential thing is that GPUs are not only to game anymore, and that is changing GPUs development everywhere.
     
  18. schmidtbag

    schmidtbag Ancient Guru

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    Vega 20 is, to my understanding, first targeted toward servers. So yes, XGMI does have a practical use.

    The thing I don't really get is AMD has been using the PCIe bus for inter-card communication for years. I question how much of this is mostly just marketing fluff with minor efficiency improvements over their "old" method.


    Well, I suppose you could think of it as a GPU orgy.
     
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  19. holler

    holler Master Guru

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    crossfire/sli is still viable, its up to devs to support. the big issue imho is that the latest unreal engines can't do mGPU at all or very well and EPIC chooses not to support it in their engine citing technical reasons.

    Check this recent review from a redittt user benchmarking a bunch of recent games, surprising results in how many games still can do it:

    https://www.reddit.com/r/Amd/comments/8ylz2i/vega_64_crossfire_scaling_testing_in_24_games_5/

    and recent strange brigade just added mGPU Vulkan support with near 2x scaling!
    https://wccftech.com/vulkan-radeon-mgpu-performance-in-strange-brigade-tested/
     
    Last edited: Sep 6, 2018
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  20. tunejunky

    tunejunky Maha Guru

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    the use of "infinity fabric" is not news or even surprising (to me), the new xgmi connector is.
    AMD has roadmapped it for a while.
    indeed, NVLink was being researched in response as well as Intel's "Omni-path" as the previous interconnects are insufficient for modern bandwidth/latency req's.
     

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