Re:Rush hour math. (Score 1)

GPUs are nice, but there's the little matter of getting data and results on and off the chip

This is not a drawback when you have a lot of things to compute on a limited set of data.
As a General Purpose GPU programmer all I see is that I won't have to program GPU FFT myself nor send the data to the CPU then back again to the GPU to do further computation if I have a FFT to perform. Each time a powerfull algorithm like this is vectorised and ported to GPU,these chips becomes more general purpose and less they are like a 3D accelerator.