Hi all

I currently have a 600W power supply running an I7 2600K, 8GB memory (2 sticks), 1 120MM case fan and a 140MM case fan with a 6850 and a 5850

I was wondering about putting in a 7950 but am thinking that my PSU will need an upgrade.

Can i put in a 7950 to replace my 6850 without changing my PSU?
Would be able to put 2 7950's in place of my current cards?

Thank you