This is one of a very few computer-related things acquired in my previous life that are still working. According to the description, it is “silent 0 dB” with “no power needed”. Which hardly seems surprising given that the cooler is a sushi-roll-shaped affair consisting of aluminium tubes. It’s usually found underneath my netbook and it does it job. Silently. A shame that Amazon does not sell it any longer (maybe it is not produced any longer), I wouldn’t mind having couple more of those.