I just bought two Bitmain Antminer S1 180GH/S.  I know I need to wire a power supply for it but does anyone have a good recommendation for a 1000watt psu that will run both miners vs getting two separate psu. Also I ordered 4 Noctua 120mm fans to put on each end to help cooling. I'm replacing the factory fan but on the other end would I make it exit or blow towards the cards?  Although that seems like a silly questions since all the hot air will rise since it's all open. I guess I answered that questions myself. Unless my thinking is wrong...thanks for the help