open app manager and there is app called max cpu. you can overclock easily with it. if you want to do it manually then open filebox or any other 3rd party file manager with root access. navigate to usr/share/kernel-power-settings. there is a text document default. create copy of it in my documents and edit it with notepad with max and min freq. now rename the edited text doc to anyname u like e.g battery. and copy it back to usr/share/kernel-power-settings. open xterm gain root access then type kernel-config load battery and it will be loaded.