High Quality Content by WIKIPEDIA articles! The PowerBook G3 is a line of laptop Macintosh computers made by Apple Computer between 1997 and 2000. It was the first laptop to use the PowerPC G3 (PPC740/750) series of microprocessors. It was succeeded by the Titanium PowerBook G4 line in 2001, which used the PowerPC G4 (PPC74xx) series of microprocessors.