Are your RAM settings tweaked in BIOS? Not that I care much about 3DMark, but I noticed that all my scores were on par with other people, except for the environment bump mapping, which was about half as much as most people. I found that kinda odd, since I thought I did a pretty good job tweaking my PC to get the most for my money. I ended up changing my RAM settings to more aggressive settings, and bam, my environment bump mapping rates doubled. Weird.
I keep thinking I can get more performance somehow, but I'm too chicken to mess with my FSB, since I've had two new IBM drives fail on me and I'm not about to lose one of my new Maxtor HDs after that hassle.
(Note to self: I should get off my lazy duff and just back up my HD)