Just for interest, I ran the X11 graphics speed tests on my iBook dual USB 600 MHz. I ran x11perf, which can be summarized by Xmark. I also ran glxgears. For comparison, I also ran the same test on an 800 MHz flatscreen iMac. The results are below. My conclusion is that the iBook is not too shabby! Test Units iBook iMac Xmark ( x SparcStation 1) 10.1639 16.4141 glxgears (fps) 220 830