If you want to do some "REAL" benchmarking then do this.
Download your favorite benchmarking demo like quaver.dm3 or nv15demo.dm3. Anandtech likes to use the built in demo001.dm3
go to the game's console ("~"

then type
timedemo 1
next, run your chosen demo- lets assume its "quaver.dm3" and its in the baseq3\demos folder. Type:
demo quaver
The demo will run at a very fast rate. After its over, open the console (~) and look at your FPS. =-)
Eric