Clearly not silent ... compared to the old series of AF120. 12V they are noisy, but it has excellent air flow. At 7V means the clear, good air flow is present. I thought that 5V is most nadda hear ... but they are always audible and this time around the air flow is very disappointing ... I took a Rhéobus to see if it could work things non..donc ... unfortunately I finally bought SilentWings 2 and 3 they are much better, almost inaudible with the settings Volts (completely inaudible with Rhéobus) with still a very good air flow, much better that 'therewith. In summary, this edition of AF120 is not intended for those who want the REAL silence. Turn to the old edition of AF120 / BeQuiet SilentWings 2 for silence! (Thank you some opinions that completely kidding ... and therefore ill-advised ..) For those who want a good air flow and who will strut of silence (as this is not a flight noise) then no worries they may turn to this fan. Personally, having passed through those / AF120 old edition, noctuas ... for me, the best BeQuiet are the best air flow and everything in silence)
If you have questions, please :) PS: I have the speed in RPM for those who want, ask me the question and I would say in RPM when it was considered noisy and when it was "acceptable"
