Well im running my E4300 @ 3ghz as i cant seem to get the thing stable on anything higher.
Im running Source with a 7950GX2 and get the same FPS in 640x480 as i do in 1600x1200
but at least its above 100fps at all times.
I wouldnt even bother running the stress test as it does nothing that you will find in game. If you like ive got a little fpstest.dem (i created for using with the timedemo CVAR) that i could send your way.
Its only about 30-40seconds long but it has a lot of action in game and is running around half of Dust2, covering some of the big FPS drop points such as A Site looking down to Long and looking up middle from CT spawn.
BTW: I run with 16xAF and 4xMSAA and still get above 100fps, but when i turn them off i see no increase either :/ i swear there are no good drivers out for the 7950GX2