I am looking to install a second fan onto my hyper 212 evo, but I have no idea where the rubber pads that came with my cooler are. Are they absolutely necessary to have when installing the second fan, or will it work without them?
The noise is generated from the fans rotating but not smoothly - from friction, out of balance or turbulent air. The faster the fan spins, the more vibration you usually get and so the noisier it gets.