If you go directly to
nVidia.com you will have access to the specifications of all graphics they offer, you just have to click each one, and look for power specs (at the bottom of each list).
Note 1: Maximum graphics card power means how much the stock/reference/vanilla versions will actually draw at +12vdc. Minimum recommended system power is what all vendors list in on their webpage products section or on their boxes. Basically nVidia assumes a basic system configuration of components; we can't tell how much they factored in overclocking or multi-GPU. So use their minimum as a guide, not gospel.
For example: GTX470's actual draw is 215W, while min req is 550W. You can figure than for 2-way SLi to add 215 to get a minimum of 765W; but again, we don't know what configuration nVidia made up. You may need less or more, depends on what you have, hence why we ask you.
For factory overclocked graphic cards like EVGA's FTW or SC versions, power goes up approximately by clock frequency ratios; that is, 10% faster = 10% more power. But if you change the voltage, then like a CPU overclock, power goes up exponentially. That is, 10% faster with voltage increase = 20% more power.
post edited by lehpron - 2010/05/27 02:41:03