Id / John Carmack announces the PS3 version of RAGE will run at only20-to-30fps, breaking promise of all versions running at 60fps. Meanwhilethe Xbox 360 version still runs at 60fps

http://www.computerandvideogames.com....php?id=220530

Carmack: Rage runs faster on Xbox 360
Thursday 30-Jul-2009 5:33 PM PS3 version at 30fps, PC and 360 60fps,
id reveals
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The Xbox 360 and PC versions of id's Rage sport higher framerates than
the PlayStation 3 version, the latest issue of Edge magazine reveals.

In a ten-page reveal in its latest issue, Edge writes that the Xbox
360 version of Rage - which uses id's new Tech 5 engine - matches the
60fps framerate of the PC version, while PS3 runs at just "20-30fps".

It's not mentioned whether the PS3 framerate will be addressed by the
game's eventual release.

"The PS3 lags a little bit behind in terms of getting the performance
out of it," John Carmack told Edge. "The rasteriser is just a little
bit slower - no two ways about that.

"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," he
said.

The PS3 edition was thought to be the most technically capable of the
console pair, thanks to id being able to squeeze the gigantic shooter
onto a single-player Blu-ray disc, compared to Xbox 360's four DVDs.

The developer also confirmed that a Mac version of Rage is still in
development.

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First of all, before anyone says anything, the blame for this squarely
rests on Sony's decision to accept a rather weak GPU from Nvidia. The
RSX GPU in PS3 is basicly a stripped down, downgraded version of the
NV47 / G70 / GeForce 7800 GTX released in mid 2005 for PCs. The
RSX is also significantly weaker than the Xenos GPU in Xbox 360, in
most areas.


GeForce 7800 vs RSX comparison
-pixel rendering pipelines/ROPs-
GeForce 7800: 16
RSX: 8

-pixel fillrate-
GeForce 7800: 6800 Mpixels/sec (16 ROPs x 430 MHz)
RSX: 4000 Mpixels/sec (8 ROPs x 500 MHz)

-external memory bus width-
GeForce 7800: 256-bit
RSX: 128-bit

-external bandwidth-
GeForce 7800: ~54 GB/sec
RSX: ~22 GB/sec