Here's how you can set the prosesor's speed.

ondemand - the deafult setting:
echo ondemand >/sys/devices/system/cpu/cpu0/cpufreq/scaling_governor

preformence - makes cpu run faster:
echo performance >/sys/devices/system/cpu/cpu0/cpufreq/scaling_governor

powersave - makes cpu run slower:
echo powersave >/sys/devices/system/cpu/cpu0/cpufreq/scaling_governor


BTW, have you tryed my cdeb2 software?, it allrety has this feature.