Cray C90
The Cray C90 series was a vector processor supercomputer launched by Cray Research in 1991. The C90 was a development of the Cray Y-MP architecture. Compared to the Y-MP, the C90 processor had a dual vector pipeline and a faster 4.1 ns clock cycle, which together gave three times the performance of the Y-MP processor. The maximum number of processors in a system was also doubled from eight to 16. The C90 series used the same Model E IOS and UNICOS operating system as the earlier Y-MP Model E.
The C90 series included the C94, C98 and C916 models and the C92A and C94A. Maximum SRAM memory was between 1 and 8 GB, depending on model.
The D92, D92A, D94 and D98 variants were equipped with slower, but higher-density DRAM memory, allowing increased maximum memory sizes of up to 16 GB, depending on the model.
The successor system was the Cray T90.
