Miscellaneous

k10ctl	AMD Family 10h (aka K10) P-State, frequency and voltage modification utility. The main purpose of k10ctl is overclocking and / or "undervolting" the CPU and to configure Cool'n'Quiet settings. In particular it can modify the P-States, i.e. alter processor and the northbridge frequencies and voltages; set / change the P-State; read out frequency and voltage information.
c2ctl	c2ctl is a Intel Core and Core 2 frequency and voltage modification utility. The main purpose of c2ctl is overclocking and / or "undervolting" the CPU and to enable Intel SpeedStep. In particular it can change the processor frequency and voltage, enable SpeedStep (e.g. if it was disabled by the BIOS due to overclocking), read out frequency and voltage information.