Noctua NH-L9x65 Low-Profile CPU Cooler @ Bigbruin.com
 

While the NH-L9x65 is much more compact than the typical CPU cooler, it isn't as small as many others. The key benefit of coolers like the ITX30 and NH-L9i comes from their height... I would not be able to fit the NH-L9x65 in to the Mini-ITX cases that I use (Minibox M350), but the other two (as well as the Titan cooler) do fit. If I had a system with just enough room for a 65mm cooler and demanded the best cooling, the NH-L9x65 would be the choice among those tested.


http://bigbruin.com/content/nh-l9x65_1