@ Omac
I read that in the article and they are clearly wrong according to IBM.
And GFlops is one of the most objective means to determine peak performances. Clearly the tests indicate that the Cell can actually achieve these GFlops is the real world.
However for the Xenon there are no real tests made public. IMO it will probably be a lot harder to reach its peak ( 77 GFlops), especially in combination with the fact the CPU is sharing its memory bus with the Xenos as apposed to each SPE having dedicated memory and both GPU and CPU having dedicated memory busses on the PS3.
On the XBox 360 the CPU shared 22.4 GB/s together with the GPU.
On the PS3 the CPU has 25.6 GB/s all for itself (and the GPU 22.4 GB/s) (taking out of account the GPU can access XDR memory).