cpufrequtils

cpufrequtils is used to control the CPU frequency scaling deamon (speedstep, throttling, ...).

This package mainly has 2 programs:

/usr/bin/cpufreq-info

/usr/bin/cpufreq-set

It's basically a user-friendly alternative to using the Sys interface.

Frequency scaling allows you to set the CPU frequency on-the-fly or specify an automatic governor. By lowering the CPU frequency when your computer is idle, you can preserve a lot of battery power and keep the system cool.

By default most systems use the ondemand governor. For battery powered environments, the conservative and powersave governors are more favorable.