Fun! My 1.2 holds 1.9GHz - 2GHz with all Core`s lit up holding at around 8W, then it drops off to 1.3GHz & surging back to 2GHz.
Now place it on a small powered cooler, turn it on and the 1.2 MacBook will hold 2GHz as long a you want...
What do you do to make it throttle? Do you push it or it just does it naturally?