Hi all, been lurking for a while and picking up great info so thank you.
Yesterday my 3 SP20's arrived , got to say the service from Spondoolies was fantastic.
After a bit of reading i decided to go for the Corsair CX750M power supplies, 6 of them to be exact. I figured a nice spread of power and if i lost one then the miner wouldn't be totally down.
No matter what fan or power configuration i seem to use they are only running at around 1582 each. One unit is sitting at 1.6 but this is still , but sometimes it's less and it's just scraping the +/-10% you would expect.
If i set the power to nuts mode maybe a bit more , but i find it best to have everything set to medium as the extra noise and power drain isn't producing anything more by any viable magnitude.
If youre running at 1450-1500GH/ea and find thats bordering on too hot and noisy, there's likely no need for having 2x PSU for each. Do you pay for power and how much?
I find these can run on a CS650M (gold) at about 1160GH/600W (about 0.55w/GH). From there to the max speed (about 1650GH), every 100GH speed increase is almost a 100W power increase. You have 744W of 12V available, a single PSU could probably achieve 1300GH/700W and have a little bit of headroom.