[Ti] Overclocking PowerBooks (was: MacTel PowerBooks)

[Chris Olson]

On Nov 15, 2005, at 9:11 PM, Carlos Fernando Hernandez wrote:

> << On Topic Question >>
> How can I overclock my PB G4 1.33ghz?

The PowerBook logic board uses soldered jumpers.  You have identify  
the voltage multipliers, unsolder them from the board, and reinstall  
them to increase the cpu's core operating voltage.  Not a trivial  
task.  If you lift a trace or make one mistake with the soldering  
tweezers, your logic board is junk.

The cpu manufacturing lots are randomly tested for stability at the  
design clock speed.  Only roughly 10% or so of the cpu's of that  
manufacture are able to clock 1,500 Mhz, even though they're  
identical. Of that generation of manufacture, what made the 1,500 Mhz  
cpu more expensive than the 1,330 Mhz cpu is that 1,330 Mhz was the  
design clock speed.  Of those that were sold clocked at 1,500 Mhz  
every single one had to be tested and certified at that clock.

In other words, there's about a 90% chance that your cpu can't be  
overclocked without stability problems.
-- 
Chris

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PGP Key:  http://astcomm.net/~chris/PGP_Public_Key/
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