Cray X-MP Processor Board

Item Type

Still Image

Original Format

Physical Dimensions


The X-MP system was Cray's first multi-processor system. It had shared memory and a small number of typical Cray vector processors. This is one of about 90 boards that made up a single processor. Later versions of this machine had four processors and gather-scatter capability. The address size of this machine was 24 bits, but a later EA model introduced the theoretical capability of addressing up to 2 gigawords.


Buddy Bland/Oak Ridge National Laboratory

Date Added



"Cray X-MP Processor Board.", Item #53 (accessed September 18 2021, 3:10 pm)

IEEE Computer Society  /  ACM          2 0   Y E A R S   -   U N L E A S H I N G   T H E   P O W E R   O F   H P C