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Tecmo said:

Hi all:

          I have a question for all you PC Gurus out there. I wanted to upgrade my PC with another GPU (SLI) as my old one is all most three years old. Now my question is will I have enough power to run both cards or will I have to upgrade my PSU to do the SLI? Or if you think I should just buy a new (but modestly priced) card.

My Specs are:

MOBO: P8 P67 Pro

CPU: Intel I-5 2500k

GPU: GTX 570 HD SC

PSU: Corsair 650W

Optical Drive: 1 DVD

HDD: 1 TB

Thanks for the help!

Fermi is a very power hungry archtecture (Most power hungry ever in fact).  Why not just get an R9 290?  It will be quite a bit more powerful than 2x570's, and it will have 4GB of VRAM instead of 1.25.