To "undervolt" and/or "underclock" a system reliably, the system must support it. Typically you want adjust the frequency scaling (if available), and there are

To "undervolt" and/or "underclock" a system reliably, the system must support it. Typically you want adjust the frequency scaling (if available), and there are multiple ways to do it, from simple sysctl commands to more complex dynamic frequency scaling daemons. http://www.thinkwiki.org/wiki/How_to_make_use_of_Dynamic_Frequency_Scaling http://www.thinkwiki.org/wiki/How_to_make_use_of_Dynamic_Fre... http://www.thinkwiki.org/wiki/How_to_reduce_power_consumption http://www.thinkwiki.org/wiki/How_to_reduce_power_consumptio...