What speeds do the mobile PIII 1.13, 1.2 and mobile Celeron 1.06 and 1.2 "step down" to?

[Hulk]

I know the mobile PIII 1.0 steps down to 733Mhz when not plugged into a wall outlet but can't seem to find the step down speeds of the other CPU's I mentioned.

The mobile Celerons seem like a good deal. They seem to have 133MHz bus speeds (1.06 and 1.2) and 256kb cache.