One last option I thought. I read that A3 will have 3 boards each needing 3 PCI power. Can I simply not power one of the boards and only run 2? In that case, I can just run from a 120 V 15 A GFCI? Will i get 540 GHS atleast?
I don't know what the hashrate would be (probably 1/3 or 1/4), but that would work. You'd lower your DC power draw by 1/3 or 1/4.