Noise Level Results
This is by far one of the most silent coolers I have had the pleasure of using in quite a while. It is more silent than most of the coolers on the idle listings with the 29 dB rating I got with 7.5V going to the fan.
Once 12 V is pushed through the fan, there isn't much of an increase at all to the level of sound coming from the CPU cooler. With it registering at 42 dB, this cooler needs you to be very close to it to be able to hear it at all and I mean like your whole head in the case close.