I wouldn't buy an OCZ power supply. OCZ anything, actually. Spend some more time in the forums and you'll figure out why: high failure rates.
One 12v rail would probably be ok, but I bought this Antec, and am very happy with it. Handles the rig in my sig, and actually it is well above what I need, but Newegg had a nice price on it.
http://www.newegg.com/Product/Produc...82E16817371044