Hopefully you've got at least a 208V plug for the Bitmain PSU - it won't even fire up on standard US 110/120V plugs. I don't know where you're located, but thought I'd point that out for you. A single EVGA 1300G2 will drive that S7 - but you need to get a couple cable splitters so you can have enough PCI connections.
Hi,
Thanks for the info, I'm all ready on 240V circuit so it should be fine. I'm located in Montreal, Qubec, Canada. I have ordered 4 units, most likely will use two (plan on buying an another S7 soon for a freind and maybe an extra one for me).