Normalized Noise Tests
For these tests, I set the fan to speeds with noise output at the following predefined levels: 20/25/30/35/40/45 dBA. I skip the corresponding tests if the fan under the test cannot reach some noise levels. The speeds shown in the graph below are measured with the fan in a clear space inside my hemi-anechoic chamber without any obstacles. I set these speeds on the Longwin machine, but they slightly change because of the variable conditions that the device applies.
20 dBA Noise Output
Performance is decent at this speed level.
25 dBA Noise Output
Again, decent performance.
30 dBA Noise Output
Decent performance, but it doesn’t stand out from the crowd.
35 dBA Noise Output
The fan shows its worth at this noise level, taking the lead in static pressure and achieving a high enough airflow. Keep in mind that this fan is mostly for radiator use, so static pressure is of immense importance.
