> Via TLP on Linux, I've been capping my laptop's CPU (i7-8665U) to 800Mhz whenever I'm on battery. in most cases, on modern hardware, limiting the frequency s

> Via TLP on Linux, I've been capping my laptop's CPU (i7-8665U) to 800Mhz whenever I'm on battery. in most cases, on modern hardware, limiting the frequency significantly below its nominal maximum will reduce battery life. for a fixed amount of work (e.g. parsing an HTML document), it is more efficient to complete the task as quickly as possible then return to a low-power state. the picture gets somewhat murkier when considering increased voltage requirements at higher clock speeds and certain fixed-wakeup workloads, but the majority of scheduler tuning for battery-powered devices over the past decade has been towards going to sleep as quickly as possible, even if that requires a high peak frequency.