that deserves a power supply recomendation..I have a Raptor drive hooked up to the ICH5 controller (soon to be raided when I get the second raptor), then I have two SATA (seagate) 80GB drives hooked up to the SI SATA raid controller, then 2 drives (WD 120GB) hooked up to the gigaraid controller (Raid 0). That's 5 drives (soon to be 6), two times Raid 0 (soon to be 3).....