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This is a model of the most powerful Cray Y-MP model “D” supercomputer of 1988. It is a salesman sample used to show this amazing machine with base to visualize the machine in scale (machine and base can be separated). The Cray Y-MP was the successor to the older X-MP and was compatible, but with extended address registers from 24 to 32 bits. It used patented High Density VLSI ECL (Emitter Coupled Logic) technology. This “D” model also offered an optional Solid State Disk (SSD) of 256 MB to 4GB capacity. The machine used a new liquid cooling system. The operating system was called UNICOS (a powerful custom variant of UNIX). Seymour designed the machine with two, four or eight Vector Processors with two functional units each and a clock cycle time of 6 ns (167 MHz). Processor Peak performance was 333 megaflops per processor. Main memory was offered in 128 MB or 512 MB of the new SRAM memory. There were a variety of Cray Y-MP and this salesman sample shows the classic horseshoe with the two “Y” processors at back. NASA and other government agencies were the only ones that could afford the Multi-Million dollar price tag. There are slight scratchs to base, but still displays beautifully. Size is 12” x 8” x 4” high. This is truly a piece of computer history and this model is very rare and seldom found. It belongs with a museum or professional collector.
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