Output Noise
I use a Class 1Ā Bruel & Kjaer 2270 G4 sound analyzer equipped with a Type 4955a microphone with a dBA-weighted dynamic range of below 6 dBA and up to 110 dBA. All tests are conducted inside a hemi-anechoic chamber with a noise floor close to 6 dBA and an ambient temperature of 25ā28 Ā°C. The test subject is placed a meter from the sound analyzer.
Full & 70% Speed
Noise output is low enough at full and 70% of its max speed.
Speed (Percentage) – Noise
I use a different setup to drive the fan for noise measurements, so there might be a difference in the readings of the Longwin machine, especially in the max fan speed reading.
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Kinda surprised you didn’t include the NH-D15. The NF-A14x25 is the successor to the D15. Wouldn’t you want to know how much better it is to the D15? Totally lame review.
Do you understand what you write? You confuse a cooler (D15) with a fan?
As an example: https://postimg.cc/67WQtBP7 (link to https://postimages.org)
It may hurts eyes, sorry š
Brighter colors ā NF-A14x25 G2, 50% PWM
Dimmer ā 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 (Iām 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 š
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.