Originally Posted by AliceInChains
I beg to differ. You can run sli 580 on a quality 750w psu. You could even fold on them with no problems. You gotta keep in mind, even though his cpu is overclocked, it is still only a 32nm sandy bridge. They are far less power hungry.
Btw OP: that thread done by phaedrus is accurate. The original recommendations he has are for typical sandy bridge setups with overclocking headroom already factored in. Even though there is no tri-sli in his calculator thread, its not hard to estimate how much extra wattage is need for a third 580. He recommends 750w for sli 580, so an extra 250w should be enough for a third.
I think you will be fine on that 1000w psu
Hope this helps.
Well, as I mentioned on the first page, as long as there are no worst-case-scenario stress tests involved, I think the ZX1000 would be plenty. In general I tend to side with the "that's enough power" crowd.
However, the OP already said he pulled 1115W from the wall with three HD 6970s, so at about 87% efficiency, that would be around 970W.
I think we can all agree that GTX 580s have the potential to pull a little more power than HD 6970s (with the +20% power cap)? If so, then surely that small difference might get him to break 1000W.
Techpowerup measures card consumption from the connectors and does the +20% for the max draw, so look here:
I don't think it would necessarily be catastrophic...or realistic at all for normal usage, but if you want to have enough power at all times
then I think a slight upgrade from 1000W is reasonable. If you're really drawing the max possible power, each GTX 580 should go above the 250W figure you mentioned.
Though honestly, since he's already got the ZX1000 and getting a new unit (1) costs money and (2) takes time to install, my suggestion would be just to not run FurMark...while running LinX. FurMark by itself should be fine.Edited by mikeaj - 7/28/11 at 11:48pm