I downloading (the free version) and ran the 3Dmark 2005.
Looks good, but I am getting like 2 frams/sec !! score like 500.
I have a 6600GT, Pentium 4 2.8 Ghz with HT. 1 Gig RAM dual channel.
Not the best, but should be WAY better that the scores I am getting.
Games like FarCry seem to run OK though.