powernowd

control cpu speed and voltage using 2.6 kernel interface

This simple client controls CPU speed and voltage using the sysfs interface to the CPUFreq driver in v2.6 Linux kernels. It does not depend on APM or ACPI, and it doesn't try to do anything other than control the CPU. The name is somewhat misleading, as any CPUfreq capable processor will work, not just those from AMD. However, it works better on CPUs that support more than two speed steps, like those with AMD's PowerNow! or Intel's Pentium M series. This daemon is less complicated than cpufreqd or cpudyn, at the cost of absolutely depending on a 2.6 kernel with the userspace governor and sysfs support enabled.