Original IBM reportSony has been toting the unparreled power of it's new Cell's Processor for years now. Claiming that the PS3 will run circles around the XBOX 360's core setup. Well IBM the chips creator recently put the little fella through the paces and the result may surprise you. Assuming you can read engineer!
At this year's E3 (or thereabouts) Sony proclaimed that their processor could achieve 200GFLOPS! However, according to IBM's white paper, only 155.5 GFLOPS was actually achieved (Table 4). BUT, IBM's tests used all 8 SPEs. The PS3 will only use 7 SPE's, due to manufacturing yield issues.
The efficiency of the Cell is 75.9% (Table 4), with of a theoretical peak of 201GFLOPs (Figure 5)--running 8 SPEs at 25.12GFLOPS apiece (Table 2). Similarly, the theoretical peak for the PS3's processor will be 176GFLOPS, using 7 SPEs at 25.12GFLOPS apiece. Assuming the same 75.9% effieciency, we could easily interpolate the PS3's Cell to be capable of 133.6GFLOPS.
The take home message is that with the PS3 being cabable of 133.6 GFLOPS and the Xbox 360 being capable of 115.2 GFLOPS, the PS3 is not nearly as far ahead of the Xbox 360 as we were lead to believe. we should expect relatively similar power coming from both consoles, processor power, and ease of programming all considered.
Bottomline is that the Cell isn't going to lap the XBOX 360 in terms of power. Ultimately it will be up to the developers to push each machine to it's limits, not the CPU.
Somehow, this does not acually surprise me that the PS3 specs would be overinflated. Seems par for the course for Sony.