It comes down to performance per $ and quality. I'm not certain about AMD's perf/$ but Intel's Xeon Phi perf/$ is terrible. AMD's software quality is not so gr

It comes down to performance per $ and quality. I'm not certain about AMD's perf/$ but Intel's Xeon Phi perf/$ is terrible. AMD's software quality is not so great compared to Nvidia. Rich Geldreich's post, http://richg42.blogspot.com/2014/05/the-truth-on-opengl-driver-quality.html http://richg42.blogspot.com/2014/05/the-truth-on-opengl-driv..., is revealing.