I have an all X problem which I'm assuming is power related.

At first it was hashing away nicely for about 8 hours... then it stopped.  After restarting, and then doing a full factory reset.... it will only run for about 1 hr before stopping.

power supply is a new Corsair CX750M with nothing else plugged in.  Before I ran the cube on it... it was powering a 49 port USB erupter setup with no issues.  :/