Remember when Sony said the PS3 would render at 120 fps? Forget it, 240fps

[MikeB]

@ Jo21

from IBM:

115.2 GFLOPS theoretical peak performance

That's Microsoft marketing, not IBM's.

IBM stated 76.8 GFlops for the Xenon, an explanation by a knowledgeable buddy tech writer Nicholas Blanchford:

"Love to know how they managed that ...it's peak is only 76.8 GFLOPs.

The 115.2 figure is the theoretical peak if you include non-arithmetic instructions such as permute. These are not normally included in *any* measure of FLOPs.

As for being measured, where? I've never seen any 360 benchmarks and can't find any.

If you want to count non-arithemitic peak figures, the usable Cell components in the PS3 will get 268 Gflops (6 SPEs + PPE) - over twice that of the 360."

Note however the Xenon is never going to be near its theoretical max, unlike the Cell which has been demonstrated to be near 100% efficient, each additional SPE is able to achieve a near linear performance increase.

Second note, the PS3 Cell has 7 SPEs instead of 6 regarding to what Nicholas mentions above. 1 SPE is being used by the PS3 OS, uses for which the OS will not waste CPU cycles on the other processors for.