this one? http://www.thermaltakeusa.com/Product.aspx?C=1247&id=1541#Tab1
efficiency is only 65%, max 20 amperage. Not suited for your system at all.
I recommend not skimping on the psu department and doing you a favour by getting a quality brand ie; Corsair, Seasonic, PC Power & Cooling at least 600w and 80plus or higher certification for an efficient power supply.