The Macintosh IIcx was introduced by Apple Computer in 1989, half a year after the introduction of the Macintosh IIx. The IIcx resembled the IIx to a great extent and provided the same performance, but was quieter (due to its quieter fan on a smaller power supply) than its predecessor. Reducing the number of NuBus slots from 6 to 3 also made the machine much more compact.