Definition of Powermac

Power Macintosh, later Power Mac, is a line of Apple Macintosh workstation-class  personal computers based on various models of PowerPC microprocessors that was 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 replacement, the Mac Pro.