According to Michael Hara, NVIDIA's senior vice president of investor relations and communications, the company is considering making a x86 processor in the next two or three years:

If that's true, Jen-Hsun, then why bother developing an x86 CPU? The answer, of course, is that Jen-Hsun knows his comments are little more than BS. Granted, there's little indication that graphics processing will migrate back to CPU, in spite of a seeming plateau in mainstream applications' polygon and pixel demands. GPUs also fill an important role in handling video processing in a speedy and power-thrifty manner. And there's some possibility, though by no means a guarantee, that over time GPUs will take over additional functions amenable to their massively parallel processing nature, by virtue of coming-soon APIs such as OpenCL and DirectX 11. But for anyone who thinks that the GPU will obsolete the CPU or even tangibly retard its advancements in the future, I have seven words for you: I'd like some of whatever you're smoking.