I'm running at 850MHz with 450MHz DSP.

Decided to use dbus-scripts to limit it to 250MHz while charging, and it seems to make priority attempts to lock it when I plug in the charger, and then when I unplug I've allowed it to hit 850. I don't need the clock ramping up to anything over 250 really, since I only charge it while sleeping.

I've also got anacron setup to throttle it back when I know I won't be using the device (certain locations in class, I get no signal and usually have my laptop anyways).

It would also be trivial to make a small QT app with a slider, that would set the speed ceiling at certain times, having an option to use the proximity sensor and accelerometer to only allow throttle unlock when the device is out of pocket and in hands.