Howto configure the Linux kernel / drivers / cpufreq * Option: CPU_FREQ * Kernel Versions: 2.6.15.6 ... * (on/off) CPU Frequency scaling CPU Frequency scaling allows you to change the clock speed of CPUs on the fly. This is a nice method to save power, because the lower the CPU clock speed, the less power the CPU consumes. Note that this driver doesn't automatically change the CPU clock speed, you need to either enable a dynamic cpufreq governor (see below) after boot, or use a userspace tool. For details, take a look at . If in doubt, say N. CPU_FREQ "Default CPUFreq governor"