The SuperCPU was developed by Creative Micro Designs, Inc. It is a processor upgrade for the Commodore 64 and Commodore 128 personal computer platforms. The SuperCPU uses the W65C816S 8/16 bit microprocessor. The unit can have up to 16 MB RAM installed. The unit sported a "Turbo" switch which, when enabled, clocked a Commodore 64 or Commodore 128 up to 20Mhz. The unit plugs into the expansion port of the computer.