antec are a shot in the dark when it comes to quility, some units are great, others are so bad they blow and take ur whole systme with them.The antec I posted has stronger +12v rails
Guys he has a low quality 420w, a 9600GT and up will not run long on it. I had a crappy 550w die from using a damn 3850 on it. A 4670 would be fine for it but I would look into upgrading it for sure!
more common is "squeeling" that will drive you INSAIN then the psu will blow
the psu I linked currently is an INSAIN deal, lifetime warr, 20+20amps on the 12v rails and the OEM behind it is ToPower, also BFG has STELLER support, if you have an issue their head tech has been known to have you add him to MSN messenger just so he can deal with you 1 on 1!!!!!