Windows XP Pro with SP 2 / AMD Opteron 165 / ASUS A8N SLI Deluxe with BIOS 1016 / Single Evga 7900GT Video Card / 2 gig Corsair XMS Ultra low latency RAM 2-2-2-5 / AeroPower II+SE 550 PSU / Thermaltake Shark tower / Thermaltake Bigwater liquid cooling system / 2 Maxtor Dimond Max 9 80 gig SATA HD in a RAID 0 array / Audigy 2 ZS sound card / MSI 16x DVD ROM / Memorex 16x DVD Writer, Flopy Drive,