10Gb/Gflop/sec

"Another way is to have the processor and memory on the same chip. Even if they can co-exist the memory size relative to processor speed becomes a problem. For every one Gflop/s we need 10 Gbits of memory to maintain a balanced efficient system. For a 100 Gflop/s CPU, we will need one trillion bits of memory. One can see that for high performance the processor and memory idea is not feasible. This of course is possible for small amounts of memory, but not for enough memory to produce a balanced system."

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