Hmm... I will suggest you to use the software that tweak the powerplan setting by using PowerCFG, which is real-time and also easy to restore by just reset the powerplan etc. Or cause before using this, remember to use coderbag one to restore it back to original "Max" setting, so the core-parking settings will works again. You can also just tick the "Show park settings in Power Options", so you can just going into Power Plans setting and change it nicely. And also create difference PowerPlans with difference core-parking setting etc, for much easier to switch to difference core-parking setting by just changing the Power Plan too, if you found forcing it to max is better than disable it. http://bitsum.com/about_cpu_core_parking.php --- And ya, for the test, I would said that better test it again after using PowerCFG or Power Plan setting, as the coderbag one will affect all settings about core-parking, or the whole powerplans if it is worst.