CRAY-2 Module Names, Functions
and Physical Layout

The CRAY-2 was created from a combination of up to 320 pluggable modules, each module had a specific function within the machine. To the right is a complete list of the module names and their description.

From the modules on the right a variety of CRAY-2 systems can be assembled.

Cray 2 Module Names and Function

* Several versions of the Q and S modules were created in order to support a range of memory types and sizes. These ranged from QA-QE, and SA-SF. A specific Qx module was paired to a specific Sx module, e.g. QB modules drove SB modules.

1-CPU Module Layout

Above is a module layout for a 1-CPU system, this would be a typical layout for the Q1.

4-CPU Module Layout

Above is a module layout for a 4-CPU model, in this case serial number 2001.

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CRAY-2 Module Names, Functions and Physical Layout

1-CPU Module Layout

4-CPU Module Layout

CRAY-2 Module Names, Functions
and Physical Layout