Speculation: GPU Performance Comparisons of 2020 *Spawn*

Discussion in 'Architecture and Products' started by eastmen, Jul 20, 2020.

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  1. Bondrewd

    Bondrewd Veteran

    Bingo.
    While Renoir very much is,
     
  2. CarstenS

    CarstenS Legend Subscriber

    Oh I didn't know THAT (j/k) - you said "every single time". That's what one-liners do.
     
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  3. Bondrewd

    Bondrewd Veteran

    And they're still doing it.
    Those capacities just don't overlap.
    If hypothetical N10 was on 14LPP, it'll be scaled down in favour of sIODs or smaller client APUs all the same.
     
  4. CarstenS

    CarstenS Legend Subscriber

    "every single time" still is a broad and untrue generalization. One-Liners.
     
  5. Bondrewd

    Bondrewd Veteran

    Very true.
    Guaranteed CPU sales trump GPU gambling every time.
     
  6. trinibwoy

    trinibwoy Meh Legend

    You’re right of course but I certainly didn’t get all of that nuance from the one liner I responded too.
     
  7. trinibwoy

    trinibwoy Meh Legend

    I wonder how many people said that back in the Athlon heyday.
     
    pjbliverpool likes this.
  8. Bondrewd

    Bondrewd Veteran

    Pentium M still existed back then, and now it does not.
    IDC is washed up.

    Intel Austin is nice but they do LITTLEs and other additive SoCs a-la Snow Ridge so that's no AMD comp.
     
    madhatter likes this.
  9. Bludd

    Bludd Experiencing A Significant Gravitas Shortfall Veteran

    Pentium M laid the foundation for Intel Core
     
  10. madhatter

    madhatter Newcomer

    Yeah, AMD is in a way better position than they were back then. Simply, they are better off than they were back then, and Intel is much worse. Them not having the Pentium M uarch to rely is one important difference, then there’s their fabs floundering while TSMC is executing flawlessly among others.

    Having as many wafers dedicated to CPUs as possible is a smart choice on AMD’s part right now.
    No one who was paying attention to Banias/Dothan.
     
  11. Scott_Arm

    Scott_Arm Legend

    Napkin math time:

    5700xt is rated 225W. Take a 50% performance improvement per watt, you get 225W / 1.5 = 150W (ballpark). Double it and you get a 300W and 80CU gpu, effectively double the performance of 5700xt. This is very rough. 5700xt is around 70-80% of an RTX2080 in terms of performance, so you're probably in the range of 140-160% of an RTX2080 at 300W, give or take. So you can kind of play with it and see how much power they'd need to surpass RTX3080, or how much lower they are if they target sub 300W. Will be interesting to see.
     
  12. BRiT

    BRiT (>• •)>⌐■-■ (⌐■-■) Moderator Legend Alpha

    I know it's napkin math, but napkin questions ... Is the 225W for the entire board or just the GPU chip? Would they need to double the power for the memory?
     
    Lightman likes this.
  13. Bondrewd

    Bondrewd Veteran

    TBP of course.
    No, and neither stuff like PCB or VRM losses would double.
    It's just silly napkin math.
    You can do the same silly napkin math with XSX GPU scaled up some %.
     
  14. Scott_Arm

    Scott_Arm Legend

    Yah I can improve that. Tdp for a 5700xt is only 180W. More power to the rest of the board than I thought. 45W for the board.

    You could do (180 / 1.5 x 2) + 45 = 285W for 200% 5700xt (80 CU) at 50% performance per watt improvement. Very rough estimate. That’s somewhere 140-160% of a 2080ti. 5700xt was like 70 or 80% of a 2080ti. Like, I ascribe no accuracy to this. It’s just to get and idea.
     
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  15. Bondrewd

    Bondrewd Veteran

    That's more like it.
     
  16. techuse

    techuse Veteran

    5700xt is about 85% the performance of RTX2080. A straight doubling of 5700xt performance puts it 40% ahead of RTX2080ti.
     
  17. Jawed

    Jawed Legend

    Adding ray tracing hardware to Navi will eat up some of the performance gains. I don't see a way to assess this though.
     
  18. techuse

    techuse Veteran

    Ya i dont think AMD will achieve this level of performance. I was just noting he had low balled the performance of the 5700xt. Something in between 3070 and 3080 for 499$ is my guess.
     
  19. Bondrewd

    Bondrewd Veteran

    Aren't we talking raster here.
    That's N22 and let's make it $479 for kicks.
     
  20. Jawed

    Jawed Legend

    We'll have to see if they can be fully turned off... If not then raster will be hit.
     
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