What kind of power supply would I need to run dual gtx460 graphics cards?

You can consider buying Corsair CMPSU-750TX 750-Watt TX Series 80 Plus Certified Power Supply compatible with Intel Core i7 and Core i5

*Box Contents - Corsair TX750W Power Supply; Cables included - ATX 24 pin & 20 pin compatible

*Supports ATX12V v2.2 standard and older ATX12V 2.01 spec

*Ultra-quiet 140mm double ball-bearing fan delivers excellent airflow

*80%+ energy efficiency at 20%, 50% and 100% load condition for less heat generation and lower energy bill

*99% Active Power Factor Correction provides clean and reliable power to your system

http://www.amazon.com/Corsair-CMPSU-750T…



Also check out at Ebay

http://rover.ebay.com/rover/1/711-53200-…|||the best is the manual of graphic card.If it has four sockets to connect the power cords to it it needs at least real 750W.check their website but as general:

it depend on other parts in your computer.

check the watt of other parts add them and add another 50 watt for good.

Just one graphic card needs 298 Watts, 591W for the GTX 480 SLI as i found here:



http://www.geeks3d.com/20100328/geforce-…|||http://www.newegg.com/Product/Product.as…|||double AA batteries|||At least 750w is good