I have 10 S1 miners and I have 6 Thermaltake 1000w PSU's - I thought that I could run 2 of the miners on a single 1000w Thermaltake, but I can't.  I have an 850w Corsair and I can run 2 S1 miners.  None of my miners are overclocked.  Maybe by under-volting my miners, I can run 2 on one of the Thermaltake PSU's.  Will the drop in hashing be more than made up for in electricity savings by using 1 PSU instead of 2?  Does anybody have any other suggestions about why I can't run 2 miners on a Thermaltake, but can on a Corsair?  I don't want to spend any more money on buying more Corsairs'  Has anyone had this problem?  How did you fix it?