The PowerBook takes DDR ram... As far as I know, only apple formatted ram will work in an apple computer... Is this correct? Or can I buy cheaper PC ram and use it in my PowerBook?
Not strictly correct as Apple does not make memory modules. Manufacturers, including Crucial, Kingston, Samsung, OWC etc etc make Apple compatible memory.
That link is offering for sale OWC, Techworks and Samsung modules for G4 PowerBooks. The important thing is it must be Apple compatible and most PC modules are high density whereas Apple machines use low density.
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