Toastage :
awesome. thanks for the fast response.
I'm gonna change my PSU.
Do you think a Corsair CX750 Builder Series CX 750W ATX/EPS 80 PLUS Bronze PSU will do the job?
yep, that'll do just fine .. happy gaming
EDIT: if you can afford a 7970, why not go for a better PSU? something like the Corsair TX or HX series, they are better than the CX series