According to GPUreview.com.. (Not entirely sure how accurate it is though) the X1600XT and 6800GS are pretty similar in performance.. what Im wondering, is which is better? I havent really looked much as I just noticed that my retailer has the X1600XT for $50 less than the 6800GS I was planning on buying, so I figured I'd ask here. If they're similar in performance, should I save my self some money and just grab the X1600XT? I have no brand loyalty, although I've never actually *used* an nVidia card, but that doesnt matter. The X1*00 series all supports Sm 3.0 and all that junk right? Or is it only on the high end X1*00 cards?