Playstation 5 [PS5] [Release November 12 2020]

Discussion in 'Console Technology' started by BRiT, Mar 17, 2020.

  1. function

    function None functional
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    Power requirements wouldn't be a surprise. Specifics of cooling while maintaining minimum noise might require some investigation and implementation though.
     
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  2. manux

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    That was my second point. It could be sony wants to optimize cooling on per ssd basis. One could interpret this as optimization == business as usual or throw FUD and speculate about sony being in trouble with overheating SSDs.
     
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  3. Allandor

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    Well, the m.2 SSD slot has its own ventilation shaft and holes to get the hot air out. So there should always be and active air flow around the m.2 ssd that has no impact on the airflow for the rest of the components.
    But if you look at the m.2 ssd of the xbox which get hot really quick and is also cooled by an airflow, you can assume that even faster NAND-chips (or just more of them) + the controller-chip (which also must be faster than Sonys solution) could get hot really quick. Maybe Sony underestimated how much heat such a solution would generate if the SSD is really under pressure all the time (not really realistic).
    The internal SSD has not that problem, because Sonys solution was to "just" use more NAND chips (less heat because frequencies don't need to be that high) and their controller chip is actively cooled also be the big-cooling solution.

    Maybe we need to wait a bit longer for an m.2 SSD that delivers the data fast enough and does not get that hot.
     
  4. PSman1700

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    The ps2's fan speed increases when a hdd is detected in its bay.
     
  5. Vega86

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    They've found a way to mine with the PS5. It's over.
     
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  6. CarstenS

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    Supposedly with 98 MH/s, which is RX 6800 +50%. With the same memory interface. Hardly believable.
     
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  7. BRiT

    BRiT (>• •)>⌐■-■ (⌐■-■)
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    Scan the QR code.


    Its fake. :lol:
     
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  8. Vega86

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    Good to hear then.
     
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  9. Tabris

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    Sony is hiring engineers to work on deep learning image processing
    New job 2021/4~, seems for PSVR2

    https://cmc-co.jp/projects/34779.html
     
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  10. Nesh

    Nesh Double Agent
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    But the PS5 doesnt have hardware ML implementation right?
    So is this a custom software solution I suppose?
     
  11. Kaotik

    Kaotik Drunk Member
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    What is "hardware ML implementation"? Surely you can't mean you'd need to have matrix-crunchers to count has "hardware ML"?
    RDNA2 supports INT4 (8:1FP32) and INT8 (4:1FP32) precisions, which are useful for ML.
     
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  12. BRiT

    BRiT (>• •)>⌐■-■ (⌐■-■)
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    They support it, but not at the faster speeds, if I recall the MS HotChips presentation correctly on customizations. Could be mistaken though.
     
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  13. snc

    snc
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    ps5 does not support mixed precision dot-product instructions INT8/4 so probably will be fp16
     
  14. BRiT

    BRiT (>• •)>⌐■-■ (⌐■-■)
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    This kind of assumes that Sony had not done similar customizations, which could be possible.

    Anyways, the closest thing I could find to the customizations was from the DigitalFoundry article and a slide from Hot-Chips, so apologies for pulling in non-Sony or non-PS5 material.

    https://www.eurogamer.net/articles/digitalfoundry-2020-inside-xbox-series-x-full-specs
    [​IMG]
     
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  15. Kaotik

    Kaotik Drunk Member
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    Not sure how MS claims it's "special hardware support" or customizations when AMD includes it in every RDNA2-product?
    Except for PS5 apparently.
     
  16. eastmen

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    This could be something Ms wanted added and so into RDNA 2.0 it went. Still doesn't mean that it wasn't special hardware that MS wanted in but now its just been included.

    I have no idea of Sony has this or not.
     
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  17. Kaotik

    Kaotik Drunk Member
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    True enough, but it is rather questionable no matter whose idea it was, IMO, for MS to claim it's "added special hardware support" when it's base architecture feature, which MS definitely knew at the time.
     
  18. ToTTenTranz

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    Why is there an assumption that the PS5's RDNA2 GPU lacks the same 4xINT8 / 8xINT4 throughput capabilities that have been present in all RDNA GPUs since Navi 14 which released over a year before both consoles?
    Microsoft claimed they had custom optimizations for ML loads ("special hardware support for this specific scenario"), not that they invented 4xINT8 / 8XINT4 mixed dot products for RDNA ALUs that had been inside already released GPUs a year before. We're probably looking at hardware support for custom ML instructions.


    Furthermore, are the faster INT8 and INT4 throughputs any useful for inference-based image upscaling? AFAIK INT4 and INT8 are useful for weight values in inference but how often are those going to appear when calculating for pixel color values?
    Pixel shader calculations can go down to FP16 precision in some cases, but in most cases it's using FP32 and I doubt the framebuffer holds pixel values at less than 24bit. If they downgraded the pixel color values down to 8bit then it would probably look really bad.
    Furthermore, I don't know of any document or official statement about DLSS1/2 that suggests it's using INT8 throughput. For all I know it's using FP16 Tensor FLOPs with FP32 accumulate (highest possible precision on the Tensor cores) which still has an enormous throughput on Turing and Ampere alike.




    This seems to be for object identification when using a 3D stereo camera. I can't tell if it's for PSVR2, it could be for some AR games like the Playroom on PS4.
     
  19. function

    function None functional
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    It probably wasn't a base architectural feature when MS specified it. XSX is basically older than any PC side RDNA2 product - it was in mass production months earlier and most likely feature locked sooner too.

    Like Cerny stated in road to PS5, if their customisations make sense AMD might fold them into their GPUs. That's up to AMD.
     
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  20. Nesh

    Nesh Double Agent
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    Dont ask me difficult questions :lol:
     
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