😉 Obviously rem that the top scores in 3Dmark are from hideously o/c systems, prob mssive FSB o/c and water-cooling. You really want to look through the results for the more average results near the middle of the pack to get an idea of what your kit should do.
😀 Essentially I would check all drivers, try deinstalling, run Detonator Destroyer and then reinstall either the latest official nVidia drivers or manu drivers, then reinstall DX8.1. After that try o/c your 4200, with 4.0ns you should get to 300/550 and any faster RAM should get to 300/600. Check your RAm settings and PCI bus dividers, ensure the PCI is at 33mhz+ (so AGP is 66mhz+) and that the RAM is using 333mhz AND the fastest (ie lowest) stable CL settings possible. If you have a load of crap in your system tray and background progs running this can all have an effect too. Just double check that you aren't forcing any settings via tweak tools or control panel as this could give an unrealistic score too. 8000 is still a nice mark, but you should definitely be over 10000 IMHO.
🙂 Although you don't sit there watching 3Dmark all day, it is very useful just for checking for any oddities perf-wise, as Gameboy999 has done.