Question Asus Strix 750W 0dB mode noise

[Franz Maurer]

Hello, when I have the 0db mode enabled in the power supply, the fan turns on while playing demanding games, but before it is turned on, there is a strange buzzing noise, as in the video (video not mine), I read that this is a normal thing, but is it really? the noise is annoying, I have to turn off the 0dB mode so that it doesn't appear. Im use google translator, sorry for mistakes.


https://streamable.com/awlw8b - 0:08 second.

 

[Aeacus]

the noise is annoying

That faint whistle noise? If so, that's fan bearing, produced on low RPMs.

Fans have RPM range that they operate at. Usually 600-2000 RPM. It is rare to see a fan that is capable operating at 0-500 RPM (unless fan is designed as such). Since bearing "whistle" appears at low RPM (below 600 RPM most likely), it wouldn't be that uncommon.

Not all fans produce bearing noise on low RPMs. Some do. Normal occurrence actually.

Either don't use 0dB(A) mode, or if you have money, replace PSU. E.g Seasonic PRIME, which too has 0dB(A) mode but no fan noise when using that mode. I know this first hand since i have two Seasonic PRIME TX-650 PSUs in use.

 

[Franz Maurer]

yes, it's about the noise that appears when the fan starts up 0:08 sec in the video, such a buzzing sound, so it's normal and I don't have to worry? Thank you for your answer

 

[Aeacus]

so it's normal and I don't have to worry?

Yes.

 

[Franz Maurer]

Thanks for info!