He's correct the benchmark stayed between 30% to 50% CPU usage during the entire benchmark on my computer...
Edit - My score jumped up 44 points by disabling Windows Aero during the benchmark... Windows does this by default when games are in fullscreen mode anyway since Aero uses some of your GPU power but since this benchmark is in window mode Aero does not get disabled... Didn't jump up much but it was interesting to see how Aero affects the GPU during the bench...

