I have purchased the Cooler Master Hyper T4 and am going to use it to OC my Bulldozer CPU to 4Ghz from 3.3Ghz, and am hoping to be able to do this without changing voltages. My main question is. Should I put a second case fan onto the heatsink, I have 3, or is it not needed. I will be putting it in on Friday so help is GREAT.