Only the most expensive PowerMacs had multiprocessors; iMacs, PowerBooks, and iBooks vastly outnumbered those with top-end PowerMacs. Which also meant there wan

Only the most expensive PowerMacs had multiprocessors; iMacs, PowerBooks, and iBooks vastly outnumbered those with top-end PowerMacs. Which also meant there wan't much point in writing heavily threaded programs unless specifically targeting high-end users.