Output Noise
I use a Class 1 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 25–28 °C. The test subject is placed a meter from the sound analyzer.
Full & 70% Speed
Despite its low maximum speed, the output noise is high compared to the rest of the fans included in the respective graphs.
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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Thank you for another great review! Do you have any plans of testing smaller fans? I have a HTPC using a Silverstone GD09 case and it uses 2 80mm fans for exhaust. I’m trying to pick the best fan but as you have shown I can’t just go of the specs listed on the box. Thanks again and take care.
We plan at some point to do more fans in general, yes.