I am planning on buying the GTX 280 when it comes out. I would like some advice, though, on what other parts would compliment it best without wasting money. I was thinking to buy the evga 790i mobo, 4gb ddr3 1333, core 2 quad q9450, and put it all into an antec 900. By the way, I already have a Thermaltake Toughpower 850w PSU. Anyone have experience/advice about these components?