I don't know how quiet the Arctic Cooling Freezer 64 Pro and its cousins are and do not have any sort of ideal fan out there - only in my head. My observations come from experience in that I had trouble with a lot of fans being far too noisy for the compact PC case I am building - far noisier than t...

Hi everyone, Interesting question about cutting off two of the ribs. If the fan humm is due to a trailing eddy of the fan blade then each blade would create its own humm. Every time the eddy sweeps over a rib then it creates a pressure distortion blip so the frequency of the humm should be N*RPM/60 ...

As I wrote somewhere else on this site a lot of fan noise comes not so much from the tips (perhaps at very high speed) but from the four ribs attaching the motor to the frame. The problem is that the ribs are too close to the trailing edge of each blade which has an eddy swiping over the ribs, each ...

As I wrote somewhere else here a lot of fan noise comes not so much from the tips (perhaps at very high speed) but from the four ribs attaching the motor to the frame. The problem is that the ribs are too close to the trailing edge of each blade which has an eddy swiping over the ribs, each blade cr...

There is a problem with most fans that most people have not begun to consider. They are generally too narrow (25 mm) and the rib structure holding the motor is too close to the trailing edge of the fan blades. It is this which produces a lot of fan noise and you can prove it by taking a noisy fan an...

Can you people try another test and for 92 and 80 mm fans as well. First: (1) Take each fan and cut the central hub away from the 4 radial ribs which hold it, and take out the ribs as well. (2) Remount the hub but with new, thinner, ribs which are at least 5mm from the trailing edge of the fan blade...

Can you do another roundup of the fans you tested but this time cut the motor and fan or each from the four ribs connecting it to the frame. Try remounting them on new ribs so that the distance between the ribs and fan tips is 5mm at least. I have tried this and found that one of the main sources of...

Its is important to understand that many fans are too loud just beacuse of badly designed support structure. If you want to make a fan more silent cut the motor hub from the ribs holding it and listen to the noise. In the case of Silenx fans the noise is just the air woosh and thats about as silent ...