A dual-G4 processor Mac running Mac OS X has been demonstrated developers at the Worldwide Developers Conference (WWDC).

The demonstration was part of Apple’s hardware track, and was hosted by Jon Rubinstein, senior vice president of hardware engineering, Phil Schiller, Apple’s vice president of worldwide product marketing, and Mitch Mandich, senior vice president of worldwide sales.

The demonstration was intended to encourage developers to multi-thread their applications, and to show the stability of Mac OS X. Though the multiprocessing Mac is not yet a firmly-promised product, developers were told that Apple is working on getting multiprocessing Macs ready, perhaps by May 2001.

The multiprocessing Macs reportedly returned triple the speed of a single G4 chip, or double that of a single G4 chip running Velocity Engine, or Altivec, when rendering real time satellite data.