Which power supply is better?

j8262345

Distinguished
Jul 28, 2010
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18,530
OCZ Z-SERIES 650W (silver certified)

or

Corsair TX650W

Need it for a 5770 card and they are both on sale at my local computer store. the corsair 70 and ocz 60

I used shopbot and corsair tx650w seems to be more expensive so could it be better?