Their should be an option on your mobo, possibly under power management to turn off auto fan speed. If you do so it will run 100% 24/7. Check out the manual, it should have it in their as well. But as a tip a great cheap aftermarket cooler would be the Cooler Master Hyper TX 2, which I got, and its wonderful for about $25. I got mine for $8 After rebate at the Egg.