

I think there are two parts to this. There are factors beyond clock rate; clock rate alone doesn’t give a full picture. Going from say 166 MHz to 1 GHz brings radical performance improvements without too many drawbacks, once you go above 3-4 gHz, the marginal increase in clock rates becomes increasingly expensive in terms of heat management.
EDIT: Didn’t realize there was difference between mHz and MHz.



























Haha )