Sorry but I think you misunderstood me. I am fully aware that your average GPU isn't optimal for this task, however I was imagining that there would still be v

Sorry but I think you misunderstood me. I am fully aware that your average GPU isn't optimal for this task, however I was imagining that there would still be value in shifting the world load off the primary CPUs. My line of thinking is around being able to use a single GPU stream processor to emulate this CPU in the required performance (ie 10mhz). If you could essentially do that you could have hundreds of these processors emulated for the cost of managing the IO to them. I am not expecting it to be "Magic Speed Juice", I am actually expecting to be getting 1-5% performance from what the GPU are capable of. However I would see this as a nett advantage if it took the workload off the CPU. Something like Knights Corner could easily do this (its basically a pentium 1 core). The point I am making is that Notch's CPU is basically a home computer CPU from the 80s. They don't require that much functionality to emulate (as if a dozen emulators in a few hours wasn't a good enough indication) and since OpenCL is turing complete you can emulate anything (see running arm linux on an 8 bit processor), the question is if its efficient enough to be viable? Can a 1ghz stream processor emulate a 10mhz single issue simple risc core? I have no idea, but I suspect its not the part we have seen so far that will be the determining factor, I believe it will instead be the IO devices that determine the requirements.