People do exactly that. More cores, even at a lower frequency still benefit from the ratio of cycles to memory latency being reduced. The computing power and e

People do exactly that. More cores, even at a lower frequency still benefit from the ratio of cycles to memory latency being reduced. The computing power and energy usage is much better, the problem is only software taking advantage of more cores. Intel's most expensive 28 core CPUs have lower clock speeds and more cores.