I have the same CPU and case on a MSI P6N Platinum board with no over-clocking at this time. Using an Enxotech Exctreme cooler. Idle is 28-30, under load no greater than 37. I added an additional Noctua 1200 rom case fan in the middle hard drive area. Bottom case fan set on medium, top two case fans on low. Enzotech fan set around 1700rpm. Other options I would consider: Thermalright's which I've used on another setup with excellent results and the Zalman 9500.