My current PS is RAIDMAX Volcano RX-630A http://www.newegg.com/Product/Product.aspx?Item=N82E16817152026
I'm gonna run an E8400, 2 Geforce 8800 GTS in sli, and 2GB Corsair XMS2 (2 x 1GB). Will my current PS be sufficent? If not, how much watts do I need?