Originally Posted by CDub07;12143377
Not sure about OCing potential cause I believe mine does not support Voltage Control. Sorry for being so blunt.
Use MSI Afterburner if to adjust voltages.
OP, the 580 overclocks pretty well. I run my core up to 915 on 1.1v and it only gets in the 70's in 1 or 2 games, usually around 62*. Best thing to do, if you don't wanna with the sound (which can get loud at max speed) is to use a custom fan profile on the card, that way you never hear it because the only time the fan becomes audible is when your in a game, which unless is muted will be louder then the fan.
Running SLI might increase there heat a little, but I'm sure you'll be fine. If you want to really push it I see you've got a loop already, so if you can simply just slap on some blocks and make no other changes, then that gives you an option for the future. Right now, I don't think you'll really need 2 extremely overclocked 580's for any games yet, but down the line you can always switch to water if you want to push them hard.
Oh yea, and If I were you I'd by Evga versions. Wouldn't worry about getting the superclocks, but with in case you don't know, Evga offers you 90 days from the purchase date to "step up" to a different card. So, if you go with Evga, maybe in the next few months when you think about putting the card underwater, the 595 may come out and you can upgrade to 2 of those for just the difference between your purchase price and Evga's price. Would be awesome to step up from Duel SLI to Quad SLI.Edited by =Tac= - 1/25/11 at 6:15pm