Comment by kev009

Depends what you are accounting and optimizing for. At the high end of computing this is generally true but occasionally vendors get pretty far in front of their skis to goose performance like current Nvidia hardware or the P4 of yore. There are plenty of SoCs over the last decades that use a few watts that can do useful work. An MSP430 of any vintage could run for years on a battery bank. If the desired work meets a small power envelope newer doesn't automatically win if you are working in small quantity like home projects.