Frequency Plots
10% Fan Speed
- Ignore the 50 Hz noise from the mains grid. The next standout frequency is at 6.3 kHz.
25% Fan Speed
- Peak frequency: 5 kHz. Again, ignore the 50 Hz noise from the mains grid.
50% Fan Speed
- Peak frequency: 630 Hz
75% Fan Speed
- Peak frequency: 630 Hz
100% Fan Speed
- Peak frequency: 630 Hz
- 2d peak frequency: 250 Hz
- 3d peak frequency: 200 Hz
Signal Recordings
I have recorded the signals shown above, but please keep in mind that I’ve enabled Automatic Gain Control (AGC) to do so to make it easier for you to reproduce them. The provided recordings are only offered for aural identification purposes.
10% Fan Speed
25% Fan Speed
50% Fan Speed
75% Fan Speed
100% Fan Speed
Pages:
As an example: https://postimg.cc/67WQtBP7 (link to https://postimages.org)
It may hurts eyes, sorry 🙂
Brighter colors – NF-A14x25 G2, 50% PWM
Dimmer – Silent Wings 4 Pro 140, Mid Range, 50% PWM
It looks like the NF-A14x25 G2 is superior to the SW4 Pro as a fan for the case (I’m guided by the graph from Noctua: https://noctua.at/pub/media/wysiwyg/A14_further_reading_1_Highly_optimised_PQ_curve_for_all_applications.png) and for the radiator of the tower cooler, but loses as a fan for the radiator, which generally corresponds to tests on other resources.
Greetings!
Thank you so much for your reviews, everything is simple, technologically advanced and accurate.
I would like to suggest adding a P/Q Graph for 20, 25 and 30 db to compare fans in the “Normalized Noise Tests” category.
It would probably be more visual, and correct, from the point of view of testing performance close to real.
Have you considered this option?
As an example: https://ibb.co/4SSw81X
It hurts my eyes, I’m sorry 🙂
Brighter colors – NF-A14x25 G2, 50% PWM
Dimmer – Silent Wings 4 Pro 140, Mid Range, 50% PWM
It looks like the NF-A14x25 G2 is superior to the SW4 Pro as a fan for the case (I’m guided by the graph from Noctua: https://noctua.at/pub/media/wysiwyg/A14_further_reading_1_Highly_optimised_PQ_curve_for_all_applications.png ) and for the radiator of the tower cooler, but loses as a fan for the radiator, which generally corresponds to tests on other resources.