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ML120 PRO RGB Electrical Hum


gohcj
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Hi, I am curious about the sound I am hearing.

 

I brought the ML120 PRO RGB 3-pack fans. I can hear a whine/electrical noise whenever the fan spin. Getting louder as the RPM ramps up. All 3 of them have this sound. All of them are connected to PWM header on the z370 Gaming 7.

 

I have another 3x ML140 pro and have no such sound. will post the sound later.

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Do you have these fans configured as DC mode? Even on a PWM header, you can configure them this way. I would suggest that you check the BIOS to make sure that the headers are configured (specifically) as PWM.

 

I am connecting it through the commander pro and set it up as 4-pin in its control panel.

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The sound is similar to the one in this video. When the ML RGB 120mm is tested at 1600RPM @ 5:43

 

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It is very annoying when the room is quiet.. I prefer the sound of noisy wind compared to the the high-pitched motor noise piercing my ears...

Edited by gohcj
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  • 1 year later...
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