I have an Asus Vivobook q200 with Intel Graphics HD 4000 that runs on idle 350Mhz and is supposed to hit 1000mhz max when being used. Now I have checked all my power options and the Intel Graphics properties and both are set to Max Performance and yet when running fur mark and monitoring with GPuz the core clock spikes to a quick 1000mhz and then goes back down to 350mhz and stays there. Using the Intel Extreme tuning utility to test it further it too has a similar behavior. It spikes to 998mhz and then goes back down to 350mhz then it may or may not spike back up to 998mhz where it then falls down to 350mhz. I don't know what I could be missing. I've uninstalled the Asus power4gear and again made sure that the high performance option is selected for the windows power management through the advance settings.