Scoobes said:
Netyaroze said:
Scoobes said:
Where are you getting your numbers from?
RSX was 176 GFlops.
Cell was 12.8 for each SPE so 12.8 x 6 (6 SPEs available for games): 51.2 GFlops
Total = 227.2 GFlops
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RSX
http://www.ps3devwiki.com/wiki/RSX
- Floating Point Operations: 400.4 Gigaflops ((24 * 27 Flops + 8 * 10 Flops) * 550)
Nvidia said this btw.
CELL
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OK, so I made a mistake on the Cell processor. I was thinking of double precision floating point performance for some reason. Even then, with only 6 SPUs available to devs it comes to 150 GFlops (6 x 25 GFlops). The theoretical 230 GFlops numbers is for the full 8 SPE Cell processor (I'm guessing the PPU contributes 30 GFlops so 180 GFlops total?).
As for the RSX, I'm not sure I believe that figure, partly because it comes from NVidia and is likely just marketing tripe, partly because the 7800GTX never topped 200GFlops (so 400 is absurd considering the similarities) and partly because in the same wikipedia link above is a link to the RSX article that states it's 176 GFlops (http://en.wikipedia.org/wiki/RSX_%27Reality_Synthesizer%27).
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You should really read my post from site 7. Flop measurement is made always by the producer of that particular processor. It also has no value to compare flops from 2005/6/7 to todays flops because the theoretical maximums dont tell you anything and there were several architectural changes inbetween that makes the Chip handle game code way way way better. The HD 5870 had 2.7 TFLOPS years ago does that mean it can actually do more than newer GPUs with less flops ? A HD 7870 GHZ runs circles around it despite having 200 less gflops. And they are just 2 gens apart.
Flops are not a metric for measuring graphics.
Nvidia says its 400 gflop marketing bullshit or not what does it change if its just 200 gflop or 50 gflop ? How does a flop translate to graphic ?
Flop comparisons make only sense in a gen of GPUs when flops are coupled with all other units and scale lineary.
So if I say the PS4 is 3x PS3 it means nothing at all because its not comparable at all. PS4 might aswell be 20xPS3 depending on the workload.
How do you compare something based on theoretical flops that can massively vary depending on the code and all in the context of a nebulous quality like graphics.