OpenGL question

I'm using VBOs to render my scene of about ~20k tris yet i'm getting ~50fps.

I've look at other peoples results and i always see people talking about how they get 100k++ tris with 500+ fps most of the time when doing VBOs

For my matrix manipulation i still use the immediate mode, could that be the problem?

>>3
Anyway, "~20k tris yet i'm getting ~50fps" is slow even for modern software renderers, so linux sucks. I remember Unreal Tournament 2004 ran in SW nearly as fast as in hardware.