Efficient and quiet
Despite its essential qualities, I find it unacceptable that the mounting is locked from the back of the motherboard only (when AMD has designed its system so simple and convenient), and especially that it is a compact case fan without access to the back of the motherboard.
The assembly is only done with the full mobility of the motherboard so don't imagine making it a 2nd mount replacement on a complete machine you already own. If I ever want to replace my cpu now...I have to dismantle my whole machine to remove the motherboard and unscrew the heatsink from the back. I might as well buy a BeQuiet RockLP with which I have had no trouble fitting.