with cards being as powerful as they are now.......CPU power is actually playing a part in 3D05, and the more powerful your graphics solution the more the CPU plays a part in the score
for instance.
i have a 3200 A64 venice and at stock speeds 2.0Ghz my SLI 7800GT's score 9500-9900 thats not much boost from the score 1 7800GT gets.
so...i overclocked my CPU, to (2.5Ghz which is what its running now) my scored in 05?.......went up to about 11,000 -11,200, so cpu power is now begining to have an effect on this graphics bench