a series of computers that defined the professional workstation for OS X users for many years. In June 2003 — 15 years ago this month — Steve Jobs took the wraps off its successor, the Power Mac G5.

Apple also ditched the 1.6 GHz CPU, offering 1.8- and 2.0-GHz processors instead. Apple didn't rest on its laurels, though.

Apple's first computer to feature Intel processors ... which could translate code written for G3 and G4 - but not G5 - chips into instructions the Intel chip could handle. Steve Jobs famously ...