Hello,
I have 2 470 rigs, the first with 4x 470 8Gb use a 1000W corsair gold, the second with 4x 470 4Gb uses a 850W corsair platinium.
Roughly, with ZEC, you can make your cards use 90ish Watts when undervolted (not talking gpuz numbers, but at wall), so in theory, a 600W supply should be able to run four of these with a basic system. However, I would not got less than 850W.
850W should be fine with 4x 470s
With stock settings 600W doesn't hold 3 of 470s, so I guess there won't be any chance to run 4x470s with 600W. Dunno about 850W.
Did you undervolt the second gear (850W)? Or pure stock settings?
Well, how to undervolt then? What's more important, won't be any consequences after undervolting?
Thanks