Our final test shows the 8600 GTS on par with both the 7950 GT and the X1950 Pro. Each of these $200 parts hits the same performance mark, and thus the 8600 GTS wins on features here.
As for the 8600 GT, performance is ahead of the 7900 GS and just hanging on to the X1950 GT. Once again, even though we have more features with the 8600 hardware, we would love to see more performance for these price points.