Who said you can't OC a PowerBook or a Mac for that matter!

DISCLAIMER: You shouldn't do this to your PowerBook. Period. This information is for educational and entertainment use only. If you actually follow these procedures it will void your Apple Warranty. If you follow these procedures you may break your PowerBook. If you break your PowerBook, well... we warned you.

PowerMac G3/G4 overclock

iBook Dual USB Overclocking