Original: Edge magazine has found that the Xbox 360 version of id Software's shooter Rage matches the PC target of 60 frames-per-second, while the PlayStation 3 currently only manages to run the game at 20-30 FPS, a discrepancy that id's John Carmack does not deny.

"The PS3 lags a little bit behind in terms of getting the performance out of it," said Carmack in the latest issue of Edge according to CVG. "The rasteriser is just a little bit slower--no two ways about that." Added the 'Mack: "The RSX is slower than what we have in the 360. The CPU is about the same, but the 360 makes it easier to split things off, and that's what a lot of the work has been, splitting it all into jobs on the PS3."

It is unknown whether PlayStation 3 performance will improve significantly before the game ships. There is still plenty of time for Carmack to work his optimization magic: Rage currently has no release date, and is expected to arrive in 2010 at the earliest.