What if I buy this type of PSU http://www.frys.com/product/6806106?site=sr:SEARCH:MAIN_RSLT_PG
I think lot of other people are doing same. See here https://www.youtube.com/watch?v=uNbaZwqdPAc
He is using http://www.newegg.com/Product/Product.aspx?Item=N82E16817152044 PSU with S5 Miner.
However, I can't find power consumption for S5 whether it's 120 or 240V
S5 and S7 are really nothing alike on power. I mean just on ports alone were talking 4 PCIe ports compared to 9 + 1 PCIe ports. I personally would not pick that raidmax if your talking about powering the S7.
If you don't use all 9 power ports you will void warranty, and 1 for controller. More and more home and hobby miners I think you will see getting 240.
What do you think about 1500W PSU? http://www.frys.com/product/6806106?site=sr:SEARCH:MAIN_RSLT_PG for S7? With 120V Wall socket outlet in America.