psu required for 7900 gt extreme sli

[setter]

psu requirements for 7900 gt extreme and sli

i currenntly have 1 xfx 7900gt extreme edition, and thinking of adding a similair card to go sli, was just wondering if my enermax noisetaker 600w psu would be ok for this set up, thx in advance for any help and advice

 

[semi-pro waster]

Power-wise it is easily capable, is it a newer ATX2.0 model or not though? If not it won't be SLi certified(although that means relatively little).

 

[Massive Attack]

Have a look at the corsair HX 620w i have the 520w and its the best psu ive ever had