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The SuperCPU is a processor upgrade for the Commodore 64 and Commodore 128 personal computer platforms. It uses the W65C816S 8/16 bit microprocessor, and takes the form of an expansion port cartridge, rather than a replacement for the 6510 CPU.


The SuperCPU was developed by Creative Micro Designs, Inc and released on May 4, 1997.[1] It used a device called the RamCard to increase its capabilities. The card is no longer sold by Creative Micro Designs as of 2001; the distribution was taken over from 2001 to 2009 by the U.S. company Click Here Software Co., but it is unclear if any were manufactured after 2001.

Technical description[edit]

The SuperCPU can have up to 16 MB RAM installed and sported a "Turbo" switch which when enabled, clocked a Commodore 64 or Commodore 128 up to 20 MHz.[2] The SuperCPU requires 0.4 A (400mA) and has a shadow ROM in 128 KB of RAM. Internal ROM was 128 KB.[3] Using the RamCard's fast page mode 1, 4, 8 or 16 MB SIMM memory modules can be used.[4]

External links[edit]


  1. ^ "SuperCPU coding competition for 2006. - Commodore 64 (C64) Forum". 2006-02-26. Retrieved 2013-05-26.
  2. ^ "The Unofficial CMD Homepage - SuperCPU". 2010-04-18. Archived from the original on 2013-05-23. Retrieved 2013-05-26.
  3. ^ "SuperCPU General Specifications". 1996. Retrieved 2013-05-26.
  4. ^ "The SuperCPU FAQ". 2013-01-01. Retrieved 2013-05-26.