Cray T90

The first machines were shipped in 1995, and featured a 2.2 ns (450 MHz) clock cycle and two-wide vector pipes, for a peak speed of 1.8 gigaflops per processor; the high clock speed arises from the CPUs being built using ECL logic.Configurations were available with between four and 32 processors, and with either IEEE 754 or traditional Cray floating-point arithmetic; the processors shared an SRAM main memory of up to eight gigabytes, with a bandwidth of three 64-bit words per cycle per CPU (giving a 32-CPU STREAM bandwidth of 360 gigabytes per second).[1] It is widely considered as being slightly ahead of the state of the art at the time it was shipped; the systems were never particularly reliable.[1] Cray T90 systems were installed at, amongst other places, at least three US government sites, at NAVOCEANO in Mississippi (Bay St. Louis) USA, at NTT and NIED in Japan, at the Ford Motor Company and at General Motors, at NOAA's Geophysical Fluid Dynamics Laboratory, at Forschungszentrum Jülich in Germany, and at the Commissariat à l'Energie Atomique in France[citation needed].The system chassis weighs 10 short tons (9.1 t), contains 4 short tons (3.6 t) of fluorinert coolant, and is approximately the shape and size of a very large chest freezer, paneled in black and gold plastic[citation needed].