As for the Arctic fans - my whole case has them - 2x140mm top intake AIO , 3x120 front intake; all of those are on silent profiles and basically never exceed 900rmp. The only exit fan i have in the back is P14 140mm and it's running full speed non-stop and my HDD is louder ...
First, we limited our tests to 120 mm fans. It's not because we hate 140 mm. On the contrary, 140 mm fans are generally quieter and move more air, making them a great choice for any case that can handle the larger size. But 120 mm is still the "default" case fan, and it's ...