I'm currently waiting for my second Evga 7800 GTX KO Acs3 to run in SLI. I currently have an Antec NeoPower 480ATX 12v v.2.0. Do I need to upgrade.....How much Would I need? AMD Dual Core 4400+ 2 GB ram 2 37 GB Raptors on Raid 0 1 Sony DVD Dru-810a 1 WD 120GB JB HD As always your thoughts and comments are greatly appreciated!!!