[quote1200263612=.inferno.]
if you can invest more into the card. I'd recommend buying a 256-bit card instead of the 128-bit cards which the 8600's are. Because games that are graphically intense won't be able to run on the 8600's. If you want to just play TF2, the 8600's are fine but I'd actually recommend the 7900 or the x1900 over the 8600 and I think they are cheaper as well.
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My 8600 is 256 bit, and only cost 100$. I can run Bioshock on everything high with good frames, and also Crysis on medium with a bit of lag.The 7900 costs 179$, and is nowhere near as good as mine.