Power question

[lebaneseguy]

Alright i someone has probably asked this question before and i have tried using a psu calculator but thats confusing me so how much wattage for the power supply do i need to run two 4870s in sli? can i do it with this psu

http://www.newegg.com/Product/Product.aspx?Item=N82E16817139005

thankx

 

[Twoboxer]

You mean you couldn't use Corsair's psu calculator? (located here):

http://www.corsair.com/

Anyhow, the 650 will probably do it, but that depends on what else your system contains, whether you OC, etc. I'd probably choose the Corsair 750W because I expect my psu to last longer than my video cards

 

[cjl]

A 650 will easily do it if it's good quality. The corsair is definitely good quality - it would take a pair of 4870s in CF without any trouble whatsoever.