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
High enough airflow and decent static pressure!
25 dBA Noise Output
Again, high airflow and decent static pressure.
Pages:
this is crazy high.
I wonder why Arctic does not specify the MTTF? I found a “Life Expectancy Report” on their support page from Nov 2024 for the P9 PWM PST fan where their testing found ~210k hours MTTF at 40C: https://support.arctic.de/products/p9-pwm-pst/techdocs/MTTF%20Report,%20P9%20PWM%20PST%20(2025-01-27).pdf
I’m curious if this MTTF applies to the P12 and P14 as well?