Bootrack tech is so awesome!
3 PSU's, 6 SP20... How many watts are those PSU's or how far down have you underclocked and undervolted those miners?
That's a shmick setup.
lookjs like a trio of EVGA 1300G2 (so about 3.6kW of 12V available), and I beleive he runs the SP20 units around 600W/1.2TH, which fits perfectly