Ten years ago, Apple introduced the Power Macintosh G5, the first of a new generation of Macs based on IBM's PowerPC G5 architecture. Unveiled by Steve Jobs during the 2003 World Wide Developer's Conference, the G5 replaced the aging Power Mac G4 and carried the banner for the ultra high-end Mac market until Apple released the Intel-based Mac Pro in 2006.Related StoriesExploring Safari's preferencesWhat are the best alternatives to Mail on a Mac?