I have 2 cx750m powering 3 antminer s1 right now, the PSU people are talking about have a low 80s efficentecy that will be borderline running 2 miners. Bestbuy has cx750m on a rolling sale, for 79.99, so I could run 4.5 miners for the price of many 850w psu that would run 4 miners. Has anyone tried to run 3 boards (1.5 miners) with a cx650m PSU?
I was using CX750M's to power two S1's over clocked and after about a month they would start shutting down randomly it really is loading them to the maximum of their rated capability.