Basically what the title says. Both are available for $50 after rebates. I figure the OCZ would be more future proof because it's 700 watts but I would prefer a solid PSU over higher voltage.
Thanks for the help.
with the OCZ PSU it only has 1 6 pin and one 6/8 pin connector, so it would be useless if you want the sli or crossfire in the future unless you want to use molex. i have the 600w version and i have has no problems but most people would say to go with the CX500.
A good quality 500W PSU is more than sufficient for your build. I prefer high-quality PSUs so I'd personally spend the few extra dollars for the M12II-520 - it's a fantastic deal on a truly great PSU. $15-20 more than the 700W OCZ, but you get 2 more years of warranty....you truly do get what you pay for. If money is a huge issue, then go for the 600W ModXstream. It's sufficient for your build and is $10 less than the 700W.