Ocz ram or Gskill pc4000 is the way to go. i would stay away from the Abit mobo, check some reviews on it. I would stick with DFI for the mobo. As for cpu I have a single core opty 146 hittin over 3 with no probs on air. And I am using some cheap-*** 1gb of corsair value select at 215mhz. paid $145 shipped for my cpu 4 months ago. As for the case I have a thermaltake armor (aluminum, not steel) little pricey, but well built and good thermal management. Gpu, 7900gt will be the way to go. i have always been an ATI fan but nvidia is whoopin that *** right now.