Believe it or not I'm running one full rig with a seasonic 550 watt 80 plus gold psu
I suspect this is the cause of all your problems right here
That's BARELY enough to power a full rig.I <3 anything Corsair in the 850W range for these guys.
I don't think that's true though. According to my power meter a full rig with v2.3 h-cards (the pci ones) is consuming 450 watts at 520 gh. 450 watts is at the wall of course.
But I still think that it would likely be better to give the power supply more room to breathe. Voltage ripple on the 12V rail is likely to occur more frequently at higher loads and the h-cards may not like this.
I think another solution would be to trim down the full rig by 4 h-cards. I was told by punin (from Bitfury Strikes Back -bfsb) that 12 h-cards is a more stable config.
