Review on Noctua NF-A20 PWM: The Ultimate 200x30mm Brown Quiet Fan by Andrew Aldana

This is the world's first 200mm variable speed (4-wire PWM) fan! I am using a water cooling radiator that can use 4200mm. I used to use Bitfenix 230mm which I had to crop. On the contrary, they fit perfectly and are quieter than Bitfenix. They move a little less air, but due to the physical laws of heat transfer, the difference in observed temperatures is <4C for me. The best benefit is that Bitfenix fans start clicking loudly after about a year of use. I have already exchanged 2 of them. Since Noctua has a 6-year guarantee, this is not a problem.