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by fentonc 369 days ago
The Cray PVP line was also doing double precision floating point, and could overlap vector memory operations with math operations. My guess is that you would need a microcontroller operating at several hundred MHz to beat a Cray-1 in practice. The later Cray-1/S and /M variants also supported a 10gbps link to an SSD of several hundred megabytes, which is hard to beat in a microcontroller.