Re:GTX 480 Undervolt with Mid-range Power Supply
2010/05/25 13:32:59
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I have not looked at my actual power consumption, but I have been able to run dual 480's at stock on an 850W Corsair supply without any issue. However, when I undervolted(just to .95V), my temps decreased about 8c. In fact, I typically top out in-game at about 70c with significantly quieter fans than under stock voltage, although my user-defined fan curves in afterburner also have something to do with that). When I ran stock with the nvidia fan profile, I would hit the mid 90's C relatively easily. I am sure that these temps equate to a relatively significant reduction in power. I have heard of undervolts resulting in up to 50W less power, although you would need a more aggressive undervolt than mine. I think Nvidia gives these cards a very sizeable surplus of voltage so that they can be overclocked easily out of the box. i hope this helps!