The Cray-4 was intended to be Cray Computer Corporation's successor to the failed Cray-3 supercomputer. It was marketed to compete with the T90 from Cray Research. CCC went bankrupt in 1995 before any Cray-4 had been delivered.
The Cray-4 was essentially a shrunk and sped-up version of the Cray-3, consisting of a number of vector processors attached to a fast memory. The Cray-3 supported from four to sixteen processors running at 474 MHz, while the Cray-4 scaled from four to sixty-four processors running at 1 GHz.[2] The final packaging for the Cray-4 was intended to fit into 1-cubic-foot (0.028 m3), and was to be tested in the smaller one-CPU "tanks" from the Cray-3. A midrange system included 16 processors, 1,024 megawords (8192 MB) of memory and provided 32 gigaflops for $11 million.
