I have a geforce4 Titanium 4200, and when I make a simple opengl framework all black, or only with a triangle, I gent only 1000-1060 fps, I tell "only" because I have heard other people to do the same, with similar 3d card, and they gets more than 2000 fps. I use similar fps counter than in Gametutorials.com

oh, I get more or less the same with 640x480, 800x600, 1024x768 in 16 or 32 bits mode, and windowed or fullscreen