I dont have an NF4 board, but I can tell you that it is an awesome HSF. There are better ones that will give you lower CPU temps, but the Zalman is one of the quietest and still cools well. You have the option of controlling the fan speeds with either the mobo or a special controller; it goes from fairly quiet to extremely quiet. Also, it looks cool, especially if you have a window on your case; there's also an LED version. The only thing I don't like about it is that its so big and hard to work around.