Amazing little fan. It lowered the computer's temperature by 3-4 degrees. It makes a bit of noise when running at full speed, but it's normal for the job it's intended for. A yes from me.

It is what it says, a quiet and efficient fan, with PWM speed control. I have 4 in my case and you can hardly hear anything.

The noise when it exceeds 900 rpm is significant and at maximum (around 1600), it covers everything. It significantly lowers the temperatures on all motherboard sensors.

Placement at the back of the case! Dramatically improved airflow with a decrease in temperature inside the case! Low noise levels!

It is definitely effective, but don't expect it to be completely silent because that's not its mission, you see, it's a high-speed fan, especially when it increases its rotations. However, with its performance, you can easily have it at 50% even with the hot Ryzen 5 3600, having a cool case without noise. After 70%, though, it starts to become noticeable to the ear, if you have it in a very quiet space, it might become annoying, it revs up strongly on full throttle. If you don't have a really demanding system, you can have it set at 50-60% at normal temperatures and increase it only in case of very high peaks. Generally, as long as it works at steady rotations, there is no noise issue.