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
I don’t have many 140mm fans in my database yet since I focused on 120mm. But give me some time.
25 dBA Noise Output
The Light Wings fan achieves a much higher speed for 25 dBA, meaning that its blades are more noise-optimized than CM’s MF140 fan. This helps it achieve a higher airflow, but it loses in static pressure. Power consumption is lower for the be quiet! fan, which is a strong advantage since it means that its bearing is more efficient.
