I think the benchmark is extremely dependent on the graphics card to the extent thet the Prossesor is almost completely irrelavent..... Is there a benchmark which measures your core system speed? Aida32 has a simple memory read/write benchmark which might be one to have a look at....
Bird man,
SiSoft Sandra has a good CPU benchmark, among other things.
CPU speed is, however, VERY relevant to Graphics benchmarking. But this needs to be qualified.....
For instance, if you have a couple of very fast systems, say, a 3.2 gig P4 and a 2.4 gig P4, and you whack an old GF2 mx400 in them, you won't see any difference in the benchmark because the old GF2 just maxes out on both systems.
But if you throw the latest Video card in the machines, the 3.2gig P4 will really show much better results..... this is why it's important to choose components that are "matched" for the system.

Mainboard: Asus P5K-Premium, CPU=Intel E6850 @ x8x450fsb 3.6ghz, RAM: 4gb PC8500 Team Dark, Video: NV8800GT, HDD: 2x1Tb Samsung F3 RAID-0 + 1Tb F3, PSU: Antec 550 Basiq, OS: Win7x64, Display: 24&