That power supply will work fine. Personaly, I would go with this
it should still take care of you, I trust them more, but the cost is within $10 of eachother. but my preference is only 430W. you PSU will do more, and is intended for use with multiple Vid Cards, mine is more build for smaller applications and has an extra 2 years on the warrenty over the OCZ warranty.
edit: Holysky's post went up before I posted this, that Antec PSu is also a nice PSU, kind of a middle ground between my Seasonic and your OCZ, but the larger upper hand my Seasonic has is this, the Antec and the OCZ have 3 year warranties, Seasonic is 5 year.