I'm not sure how the specs match up speed wise, but here they are! G4 Power Mac: 512mb ram, 10gb hard drive, 400mhz cpu... iPhone 4: 512mb ram, 32gb hard drive, 600-1000mhz cpu... I realize that certain factors come into play, but what say you? So, does a 2010 phone out power a 1999 Power house??? Bonus: My 11 year old Power Mac G4 STILL works. Runs Tiger smoothly. ... LOL!