Power Macintosh, later
Power Mac, is a line of Apple
Macintosh workstation-class
personal computers based on various models of
PowerPC microprocessors that were developed, marketed, and supported by
Apple Inc. from March 1994 until August 2006. The first models were the
Power Macintosh 6100,
7100, and
8100, which offered speeds ranging from 60 to 110
MHz. These machines replaced Apple's
Quadra series of personal computers, and were housed in cases very similar to systems sold by Apple up to that point. The Power Mac went on to become the mainstay of Apple's top-end offerings for twelve years, through a succession of case designs, four major generations of PowerPC chips, and a great deal of press coverage, design accolades, and technical controversy. In August 2006, the Power Mac's retirement was announced at Apple's
Worldwide Developers Conference by
Steve Jobs and
Phil Schiller, making way for its Intel-based replacement, the
Mac Pro.