Chipping the Mac

Chipping the PowerBook

Many Mac models can be "chipped" to run at a higher speed. These pages provide information on the maximum reliable speed. This may vary from one machine to the next. Chipping is not authorized by Apple. Any modifications you perform on your Mac may damage it and will void any warranty. Modifications are done at your own risk.

Be sure to visit Marc Schrier's Clock Chipping Home Page, the definitive resource on chipping the Mac.

PowerBook 145

The PowerBook 145 has a 50 MHz oscillator which runs the processor at 25 MHz. The max oscillator you can replace it with is 70 MHz, to run the processor at 35 MHz.

Info from Machine Specifics

PowerBook 150

The PowerBook 150 has a 67 MHz oscillator which runs the processor at 33 MHz. The max oscillator you can replace it with is 86 MHz, to run the processor at 43 MHz.

Info from Machine Specifics

PowerBook 160

The PowerBook 160 has a 50 MHz oscillator which runs the processor at 25 MHz. The max oscillator you can replace it with is 67 MHz, to run the processor at 33 MHz.

Info from Machine Specifics

PowerBook 170

The PowerBook 170 has a 50 MHz oscillator which runs the processor at 25 MHz. The max oscillator you can replace it with is 70 MHz, to run the processor at 35 MHz.

Info from Machine Specifics

PowerBook 180

The PowerBook 180 has a 67 MHz oscillator which runs the processor at 33 MHz. The max oscillator you can replace it with is 74.25 MHz, to run the processor at 37.125 MHz.

Info from Machine Specifics

PowerBook 520 and 520c

The PowerBook 520 and 520c have a 12.5 MHz oscillator which runs the processor at 25 MHz. The max oscillator you can replace it with is 22.5 MHz, to run the processor at 45 MHz.

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