The SuperCPU was developed by Creative Micro Designs, Inc. It is a processor upgrade for the Commodore 64

Commodore 64

The Commodore 64 is an 8-bit home computer introduced by Commodore International in January 1982.Volume production started in the spring of 1982, with machines being released on to the market in August at a price of US$595...

 and Commodore 128

Commodore 128

The Commodore 128 home/personal computer was the last 8-bit machine commercially released by Commodore Business Machines...

 personal computer platforms. The SuperCPU uses the W65C816S

WDC 65816/65802

The W65C816S is a 16-bit microprocessor developed by the Western Design Center . The W65C816S is an enhanced version of the WDC 65C02 8-bit MPU, itself a CMOS enhancement of the venerable MOS Technology 6502 NMOS MPU...

 8/16 bit microprocessor

Microprocessor

A microprocessor incorporates the functions of a computer's central processing unit on a single integrated circuit, or at most a few integrated circuits. It is a multipurpose, programmable device that accepts digital data as input, processes it according to instructions stored in its memory, and...

. 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.