I have been watching the Epiphany chip for a bit and just noticed it popped up on Kickstarter. http://www.kickstarter.com/projects/adapteva/parallella-a-supercomputer-for-everyone This thing looks pretty impressive. I think the 45Ghz may be in a very specific application, but the power to watt ratio is pretty solid! This is their 4th generation of Epiphany chip, and the reviews of the 3rd gen chips have all been fantastic. You can see a few (biased?) reviews on their website here. My only real concern is how hard it will be to port existing software over to this thing to fully utilise the multi-cores.