Yes. Im running 2 @ Sapphire R9 280X's off a Corsair 750 watt.

If you had a machine that literally printed money, would you sell it?

I just purchased an Arctic cooler for my GPU (http://www.arctic.ac/) and it took the temp down from from 90c to 69c and almost no noise.
It was $99 but Im planning on getting another one since Im so impressed.

and?