"Noctua has once again made a product with considerable thought and care. The NH-U9S fills that gab between the low performance stock coolers from both Intel and AMD, and provides something that can dissipate a large volume of heat within small confinement. I often run into this problem when reviewing chassis, where I find it to be great, but lack the height to install a decent size aftermarket cooler. This is where Noctua comes in!"
hornybluecow - Overclockers Club.
Noctua NH-U9S CPU cooler review by Overclockers Club - Introduction & Conclusion.