I just bought a nvidia 9600GT SLI and im not sure about it's performance.
I saw that in the charts here http://www.tomshardware.co.uk/charts/gaming-graphics-ch... it get's 12321. How exactly can i test it? I got installed the 3DMark 06 and i ran the whole test and it got me to 4362. I got a p4 at 3.0 ghz and 2 gb of ram.
Im suspecting the gcard to malfunction because sometimes when its on full load i hear some weired noise from it, its too though.
The sound might be electrical and is caused by the cards components (it`s a squealing/shrieking sound under load).
The 3d Mark 06 score is very dependant on CPU and it is this which is giving you the low score; your P4 is holding it back.
Test the new cards by playing games! Most have built-in benchmarks, use those to check how well you`re doing.