>>4
Won't do fuck all. Intel's Larrabee prototype was a 32-core monster with cores each running at 2GHz and it still couldn't perform very well at ray tracing.
Modern GPUs have thousands of shader cores running at around 1GHz and they don't fair too well either.
Ray tracing isn't FLOP limited, it's limited by memory latency and cache coherency.
John Carmack once analyzed the memory access patterns of ray tracing at a low level and concluded that it will NEVER be feasible for real-time graphics with graphical qualities that will exceed those attainable through traditional rasterization.
Instead, he found that ray-casting using deferred shading and scene composition is far more feasible. Note that ray-tracing != ray-casting.