There is an article on tgdaily about the floating-point speed of a number of game consoles for the sake of a raw numbers comparison. They chose to report on the FLOPs each processor can put out, at peak (that would be 'floating operations per second') which is an industry standard measurement for the speed of CPUs in general.
Of course, CPUs for PCs are not frequently measured in FLOPs -- its normally a benchmark associated with raw horsepower type computers like mainframes and supercomputers. The Top 500 Supercomputers list measures performance in FLOPs (actually, giga and tera FLOPs) of the world's fastest computers.
More thoughts coming ...
My comment from that page for those who don't want to sift through and find it:
To those who claim this article is biased somehow, you obviously don't understand benchmarking. The whole purpose of the FLOP measurement is the ability to compare different CPU architectures in a meaningful way.
FLOPs are a measurement of performance that does not necessarily reflect how appropriate a given platform is for your software however. The Cell processor in the PS3 is much faster doing Folding@Home calculations than a regular Intel or AMD CPU for example, but isn't well designed for other workloads.
And to the SPU haters, SPUs are FULL processors. Look at their specifications. Their only meaningful limitation is how much memory access they have at any given point in time (without making DMA calls to fetch other data to process).
They are not comparable to FPUs at all.