Although this doesnt have the greatest reviews I have found it to be anything but a great Cooler. I run a FX-6300 and with the stock cooler it was idling at about 30 – 32 degrees. With the Gammaxx 400 put on it now idles at a temp of 18 – 20 degrees. In this hot and humid weather thats awesome. Whats makes it better is its just a clip system much like the stock cooler so no removing the motherboard to fit. The only slightly downside is it takes some force to make the clips click into place so I suggest being patient.