I will be using the XIGMATEK HDT-S1283 CPU cooler on my e8400 that will be mounted on an evga 780i mobo. And I see that it comes with a manual fan controller knob that mounts on the rear in the card slots. My question is do I have to use that manual control knob, or can I attach it so that the mobo controls it's temps automatically? And since I will be overclocking the e8400 as much as possible so that it is stable, do I have to keep the fan cranked on high all the time, or only when gaming??? This is my first build and this will be a gaming only machine for the most part. I am also thinking about getting the zalman 6 fan controller also. I have never built a machine or overclocked before, sorry for the noob question. Thanks.