Thunderbird is right, glxgears is not much more than a glx testing app.
My system scores about 4000fps, and your system should score better (see my specs below).
And I had about 1000fps using a Number9 RevolutionIV 1600SW, and this card is pretty ancient - it never reached more than 4fps in Maya, with only a single cube displayed...
"Computer games don't affect kids; I mean if Pac-Man affected us as kids, we'd all be running around in darkened rooms, munching magic pills and listening to repetitive electronic music."
-- Kristian Wilson, Nintendo, Inc, 1989.