In BIOS option needed usually named 'EIST' or 'Enhanced SpeedStep Technology', look for in in Advanced - CPU or Power menus.
In OS install Intel Chipset Software and go to Control Panel - Power Options. Select Balanced plan, that's all that need. If interested more, go to 'Change plan settings' - 'Change advanced plan settings', click 'Change settings that unavailable' and go to 'Processor power management' part - here you can change performance level (in percentage) on different modes and manage advanced power saving options.
You don't need to do anything at all. As the EIST comes enabled by default in the BIOS itself.