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I've wanted to try this for quite a while now as it combines a few of my interests: the Cube, dual G4 computers, and hardware mods.  So the dual 450/500MHz CPU cards from the apple towers will fit in a cube, but it's pretty rare to see these go past 550MHz or so when overclocking.  Also, they...

I like the 12" powerbooks and I've done the possible upgrades.  I took one apart and swapped the chip with a slightly better one and was able to get 1.83GHz that's stable and not too hot.  These chips will usually do 2+ GHz but they take more voltage and put out more heat, so 1.83 seems to be...

I also joined because of this thread.  Thank you for posting MOS8_030!  How much heat/voltage could the 7448 survive in your tests?  I would like to hear more of these insider details if possible.  Is there any chance of getting some ideas on the firmware changes needed to run the 7448?  That...