Benchmarking,
If done correctly it doesn't really matter what the utility is.
Q3 is an excellent benchmark as long as you know what the attributes are for all pc's you are comparing to, thats the tough part. Many people disable sound, turn off features then say thier card is faster.
But Q3 can be a very good indicator of what youe system is capable of.
3D Mark 2000 , if you are comparing similar cards to each other it's a great benchmark.
Just don't compare a V5 to a Nvidia card. Without T&L the V5 gets smoked.
SiSoft Sandra is a nice set of utilities. But there are lots of versions floating around and it's difficult to compare.
A decent benchmark is at
www.winmag.com Look for Wintune and run it. You can compare it to others that have a system like yours.
Q3 1600x1200 quality settings 59 fps
3d Mark 2000 default 9431
System ThunderBird 1.25 GHz Creative Labs Annihilator 2 Ultra 270/500 core/memory