Super Mario 64, in front of the castle (high load).
333mhz: 5.22 FPS
222mhz: 3.25 FPS
100mhz: 1.84 FPS
Super Mario 64, in tunnel, with lots of clipped faces (quite low load).
The code for the Framerate is already in there, try holding down select every now and then. If not, it might be a change I made.
It also seems he is swizzling the textures (good for speed), but he doesn't seem to be using DXT compressed textures or CLUT, which would mean less RAM usage.