Jesus, the EVGA 1600W is worth nearly as much as the S4!
I had the psu before I got the miner. It was in a PC build I did last year I took it out when I sold my Titans and got 980's. I'll open up the S4 when I get home to see which one I have. I hope its the pci-e one then I can re purpose the psu I have if not Ill sell it and get the one I need. Right now it's mining away at stock freq and haven't given me any problems so far.