Performa是苹果电脑（Apple Computer）在1994年推出PowerMac系列电脑后，为了因应低价市场的需求，于1995年另行推出的一个新系列电脑称呼，诉求于低级、入门、家用，好与中高档且专业定位的PowerMac有所区隔，在**推行时为此系列名称冠上了中文称呼，叫「威力猫」，但实际上因低价设计的缘故，Performa系列多半仅使用PowerPC 603（或603e，e为强化「enhanced」之意）处理器，此型处理器的性能较为低落（与PowerPC 601、604相比），使用户对其运行性能感到不满，并因此戏称此系列机种为「病猫」。

The Macintosh Performa series is Apple Computer's consumer product family of Apple Macintosh personal computers sold through department stores and mass-market retailers from 1992 until 1997, when it was superseded by the Power Macintosh 5x00 series. The Performa series was not a new line of computers, but simply renamed models from Apple's regular line of computers — such as Quadra, Centris, LC, and Power Macintosh — sold by authorized Apple resellers. The initial series of models consisted of the Performa 200, based on the Macintosh Classic II, the Performa 400, based on the Macintosh LC II, and the Performa 600, based on the Macintosh IIvx.