CDC 6400

The CDC 6400 is a lower-performing member of the same mainframe family as the CDC 6600; the dual-CPU version of the 6400 was denominated as a CDC 6500. The 6400 shared its instruction set architecture with the 6600, and so was program compatible at the object code level, but it did not use a superscalar internal architecture, as the 6600 did. As a result, it was not as fast as the 6600, but was cheaper.

External links

• Cyber 70 - CDC 6400 documentation at Bitsavers
  • Control Data 6000 Series Computer Systems Hardware Reference Manual
• Scans - additional 6000 Series documents
  • Control Data 6000 Series Computer Systems Reference Manual - considerably earlier version
• Control Data 6400/6500/6600/ Computer Systems Reference Manual
• 6400 Central Processor
• UC Berkeley CDC 6400
  • UC Berkeley CDC 6400 Memories - many images