http://daystar-store.com/index.asp?PageAction=VIEWCATS&Category=745
daystar made a processor upgrade for the PB G4. I think it has since been discontinued? At least it is possible and has been done...
I think the 12" maxed out at 1.67 ghz and they made a 2.0 ghz for the 15" and 17"
HTML:http://daystar-store.com/index.asp?PageAction=VIEWCATS&Category=745
Where did you find the upgrade? They don't seem to exist anywhere anymore. I would love to get my 12" up to 1.75GHz as this is a computer I can see myself using for a long time to come.You can upgrade your powerbook g4 cpu, I upgraded my 1.33 to a 1.75 with a daystar cpu, already had 1.25 ram. Now the baby rockets and is rock solid stable, the upgrade is not fun, painstaking small and tight working room. Good pull-apart guide on you tube.