The cooler cools with an extra 120 mm PWM fan on the other side my easy overclocking FX 8350 under load at 53 ° C. At idle, the temperature is only 30 ° C. Under both conditions, both fans run very quietly. The case fan also BeQuiet are louder than the fan of the CPU cooler. The mounting of the cooler was pretty easy and is also very stable. I can highly recommend this cooler !!!