[zozbot234]

Static power ratio is increasing in modern processing nodes, to the point where a "rush to idle state" strategy starts to make sense because you can power down subsystems in idle states but you can't do that if you lower processing speed. The tradeoff would of course be different in a chip that was architecturally designed from the ground up for low-performance use, but that would be from things other than just a lower frequency for the same chip.