I would do this: MB: is ok what you choosen OS: Vista Ultimate x64 >> why not? you have vista ready hw, lot of problems running XP RAM: 8GB >> Ultimate PCs have minimum of 4GB GPU: nV9800 x2 >> enough cause games today are crap anyway CPU: C2Q (2.4Ghz would be enough but no limit with this), C2E (extreme is extreme for "nothing" - in my POV) >> there will be not much app where all cores will run 99% PSU: 600W with 80+ efficiency >> enough, i would never go into SLi,3-Way SLi or anything like that, i like mother nature HDD:2xSATA disks in RAID0 (if you want ultimate go for 2xSSD SLC ) DVD: why not BluRay? PPU: none Case: your choice Key&Mouse: your choice LCD: viewsonic, dell 24"+ >> nothing less best would be to buy a normal PC and x360 for games, cause developers these days do crap not games, console gaming is better investment in the future