Hah 8500GT in SLI
Actually it's kind of surprising you even got that high with them. Even my ol Radeon 3850 with everything at stock speeds gets 8700. If you're on a budget go with a 9600GT. Even a single 9600GT will give you much more performance than your 8500s. You can SLi a second one latter. If you can afford to spend a little more though try and get a 9800GT.