I'm not sold on the " 1. Make the most powerful flops-per-watt machine." success.

From my knowledge that claim only makes sense for the ever-shrinking domain of applications that haven't been ported to GPGPUs with _simpler_ cores. I also don't understand how the best "flops-per-watt" can be extrapolated from the fact that the Phi is used in top ranked TOP500 machines.

The Phi really just seems like an intermediate between CPUs and GPGPUs in the ease-of-programming vs. perf/watt pareto curve.