the entire board is smaller than the stock iMac G4’s hard drive. It still took plenty of cramming, with a multitude of adapters finagled and massaged to fit inside the original housing.

For almost five years, the heart of the Power Mac was the PowerPC G4 chip. Starting in 1999 it clocked at just 350 MHz, but by the time the Power Mac G4 line was retired, a tower with dual 1.42 GHz ...