Review on Value Pack ARCTIC P12 120mm Case Fans - Pressure-Optimized, Very Quiet Motor, 1800 RPM Fan Speed, Ideal for Computers - Black by Chasmum Kumar ᠌

I bought them to replace the factory ones for the case. As a result, I now have 5 of them. Planted on 7V and buzz. The computer's idle operation is so quiet that any household noise interrupts it. And if you sit in the headphones, you can not hear at all. At first, it was not even comfortable (maybe I thought that the computer was not working). For a month while there are no complaints, only positive emotions. Regarding the shape of the blades, I will note separately, they are not convenient to wipe, and dust loves to accumulate on the back. But this is rather a trifle than a real minus. There is no thread for the fastening screws, they form themselves when you screw in for the first time, a strange and not the most convenient solution, as for me. The volume was changed using the phone, close to the case in an empty room (See screenshot).