Playstation 5 [PS5] [Release November 12 2020]

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

  1. chris1515

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    This is a math and font rendering test. This is not a game engine test.

    EDIT:

    https://sluglibrary.com/
     
    #8001 chris1515, Feb 10, 2021
    Last edited: Feb 10, 2021
  2. milk

    milk Like Verified
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    Font rendering eh. Performance difference in Remedy's Control explained.
     
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  3. thicc_gaf

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    Ah man, Omega Boost is legit. One of the smoothest games of that gen, hands down. I get mad sometimes that Polyphony's never revisited the IP; granted Gran Turismo's a big deal but I'd of hoped by now they could've expanded to having a team dedicated to GT and another to try different IP like an Omega Boost sequel.

    I think a new Syphon Filter might be in the works, probably as some multiplayer-focused game. It's been hinted at a few times at least in terms of IP that could come back. And yeah, Klonoa's a Namco game, but they've done absolutely nothing with the brand since the Wii remake. Maybe Sony or someone could work out a deal to do something new with the IP or at the very least, he should be a guest character in Smash.

    As for the Sega game, wish I could think of the name but no dice. There's an article about it on Arcade Heroes and they have a link to the YT video, otherwise I'd have to search all over my bookmarks. But it's a very neat looking game and quite forward-thinking, I just wish Sega found ways to bring that type of stuff to Saturn and Dreamcast more frequently when they were still making consoles :S
     
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  4. Allandor

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  5. Panino Manino

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    Dream is over...

    What exactly he mean with "parts missing" in the FPU?
    Different may also mean that it was altered for the better, right? Because makes no sense to get a Zen 2 CPU and make it worse.
     
  6. PSman1700

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    There never really was one.
     
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  7. Allandor

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    Well, I guess they might have just cut some instruction sets, Sony thinks that are not needed for games. E.g AVX is really energy hungry. Might be something sony get rid of, so the CPU does not draw all the power away from the GPU. This is just an example, why they might have cut some things.
     
  8. function

    function None functional
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    Eyeballing it, looks like 2 X 4MB L3 for the CPU so same size as XSX / Renior.

    Surprise to no-one, I'm sure.

    Also lmao Red Gaming Tech.
     
  9. AbsoluteBeginner

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    Surprised to see it is designed exactly as most expected really and there is IC/Zen3 cache missing. RGT and that Moore guy has some explaining to do.

    Looks like same Zen2 CPU cluster as XSX attached to Navi 10 GPU layout.

    [​IMG]
     
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  10. function

    function None functional
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    Maybe they've cut the AVX unit back to 128-bit? Should save some die and ensure significantly lower peak power draw...?
     
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  11. cwjs

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    Cool! Looking forward to analysis from hardware experts on this.
     
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  12. iroboto

    iroboto Daft Funk
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    the only thing that comes to mind is AVX. Not sure what else is included in the Floating Point Unit for Zen.

    From Anandtech: @Ian Cutress
    The key highlight improvement for floating point performance is full AVX2 support. AMD has increased the execution unit width from 128-bit to 256-bit, allowing for single-cycle AVX2 calculations, rather than cracking the calculation into two instructions and two cycles. This is enhanced by giving 256-bit loads and stores, so the FMA units can be continuously fed. AMD states that due to its energy aware scheduling, there is no predefined frequency drop when using AVX2 instructions (however frequency may be reduced dependent on temperature and voltage requirements, but that’s automatic regardless of instructions used)
     
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  13. Panino Manino

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    I get what you're saying but isn't this idea totally little insane? Makes no sense, AVX is useful and I don't believe the work to remove instructions from the transistors in the FPU isn't worthy.
    Also, Zen 2's energy consumption on 7nm shouldn't be a problem on a high performing hardware.

    Or maybe Fritz was drunk and shot the wrong die?
    Man... the fanboys conservationists will have a field day with this. I can already hear they claiming PS5 not only uses RDNA1 for it's CPU, now the CPU was confirmed to be Zen 1.
    No idea how can they justify the thing performing almost the same and some times better than the SeriesX however...
     
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  14. iroboto

    iroboto Daft Funk
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    This Zen 1 diagram.
    [​IMG]

    I'll be honest in saying, using only your eyes, I think you'd likely only be able to notice the FPU was missing entirely, the likelihood someone could differentiate between 128 and 256 on this is pretty nuts from an x-ray; that's one hell of a call I should say. I'd be hesitant to even make it without verifying with others.

    Need to wait for more info, people are definitely going to working on this for the next couple of days. Removal of the FPU unit entirely does seem slightly disappointing if true, but support for AVX1 still is useful, just not as good as AVX2 (if they somehow manage to make that call from teh Xray). Type of thing is very useful to have to handle complex worlds. Like managing 1000 doors if they are open and closed, or walking through automated door sensors etc. The more items to manage, you're going to need to vectorize to increase the speed of processing those loops.
     
    #8014 iroboto, Feb 14, 2021
    Last edited: Feb 14, 2021
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  15. ChuckeRearmed

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    I wonder how people are able to recognize architecture from those pictures:shocked:
     
  16. BRiT

    BRiT (>• •)>⌐■-■ (⌐■-■)
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    Obligatory Response: "You get used to it. I don't even see the code."

     
  17. function

    function None functional
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    I'd have thought you'd be better off with it in as you say (and I'm just speculating on a possible reason for FPU changes that might not even exist!), but every mm^2 and every watt consumed will be carefully thought about. Cerny did talk about power consumption of certain CPU operations, so even on 7nm CPU power draw is a really big consideration.
     
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  18. Kugai Calo

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    The vector width of AVX must conform to the standard, unlike SVE or RV64V. Also there’s SSE that takes care of 128-bit.
     
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  19. Panino Manino

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    When Zen 2 came out the 256FPU was very obvious and easy to see on the dieshots. It looked like the Zen 1 FPU was mirrored.
    Found this Renoir dieshot with annotations. Fritz image is hard to see, but we can see enough to noticed that the FPU looks "thinner"?

    [​IMG]
     
  20. cwjs

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    I'm not aware what much of this means, but dropping it here
     
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