A spokesperson from NVIDIA was quoted in PlayStation Magazine saying that the PlayStation 3 GPU, the NVIDIA RSX, is basically a slightly less powerful GeForce 7800 GPU.
This means the RSX GPU for the PS3 should basically be just as fast as two GeForce 6800's running in SLI. And according to Microsoft and ATI, the Xbox 360 GPU will be more powerful than the same SLI combo.
But recently it was unveiled that Fight Night: Round Three, one of the headline graphical titles for the PlayStation 3, will look exactly the same on the PlayStation 3 and the Xbox 360 console. Now should we conclude based on this that both next-generation consoles have roughly the same technical abilities, and that neither of them should be considered as inferior?
Well, doing some math we’ve worked out that the GeForce 7800 GTX flavour, the high-end of nVidia’s high-end chipset, is almost equivalent of two GeForce 6800 Ultras. So technically there could be nothing in it, presuming that the RSX chip is based off of the GTX flavour of the 7800.