>If we eventually start doing graphics on CPUs it will because we move to ray tracing or other sorts of algorithms that GPUs are bad at. Even for ray tracing,

>If we eventually start doing graphics on CPUs it will because we move to ray tracing or other sorts of algorithms that GPUs are bad at. Even for ray tracing, I think you'll get better results on a modern GPU. Each individual processing element may not be anywhere near as good at dealing with the constant branch prediction failures inherent in ray tracing algorithms as modern CPU cores are, but there are thousands of them for every CPU core you have, and millions of completely independent samples to compute in a raytraced image. But I suspect that by the time that realtime raytracting becomes viable, the HSA approach I outlined above will be viable as well, and that will be the way to go.