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 Post subject: noisy motherboard
PostPosted: Mon Dec 05, 2011 2:17 am 
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Joined: Mon Dec 05, 2011 1:57 am
Posts: 5
Hi guys.
I'm relatively new to the quiet computing scene, but I've recently built a new PC with silence as the main focus.
I've managed to silence just about everything in there, but there seems to be a semi-high pitched "whirring" rhythmic sound emanating from somewhere on the motherboard.
This is especially annoying when the PC is idling, sinde it's dead quiet apart from this annoying noise.
I've unplugged all the fans, the GPU and the HD's and my PSU is dead quiet. It sounds like an old, small whiny whirring fan. I first thought it was my corsair h60 radiator, so i returned it, but the sound is still there with the macho hr-02 installed without even a fan attached, and it is audible and extremely annoying. the fans are whisper quiet, so this is much louder than anything in there. Anyone have any ideas of what this could be, or how i could remedy it? I've read about coil noise, but it doesn't seem to match what i'm dealing with.



Fractal Design R3
Asus P8Z68-V Pro
Intel i5 2400s
Corsair 3 force SSD
OCZ Vertex 3 SSD
Thermalright Macho HR-02
ASUS GeForce GTX 570 1280MB PhysX CUDA
2x akasa black fans on 400-600 RPM.
Seasonic x-760 semi passive PSU


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 Post subject: Re: noisy motherboard
PostPosted: Fri Dec 16, 2011 12:35 am 
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Joined: Sun Jun 13, 2010 12:44 pm
Posts: 332
Location: Seattle
I got this too when I started building my own silent machines. Usually it was related to the processor's power management circuitry.

Is this 'somewhere' close to your CPU?

Try disabling SpeedStep, that will make your CPU constantly run at full speed rather than underclocking itself during idle times. Nearly always does the trick for me.


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 Post subject: Re: noisy motherboard
PostPosted: Thu Jan 12, 2012 2:33 pm 
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Joined: Mon Dec 05, 2011 1:57 am
Posts: 5
Hi and thanks!
Yeah, this "somewhere" definately seems to originate from where the CPU is.
I will try what you said and see if it helps :D
Thanks man


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 Post subject: Re: noisy motherboard
PostPosted: Thu Jan 12, 2012 8:32 pm 
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Joined: Wed Jun 02, 2010 9:15 pm
Posts: 218
Location: Calgary, Alberta, Canada
The Corsair H60 has a water pump at the CPU heat ex-changer.


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 Post subject: Re: noisy motherboard
PostPosted: Fri Jan 13, 2012 12:16 pm 
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Joined: Mon Dec 05, 2011 1:57 am
Posts: 5
Yeah, that pump was too loud for me.
I am having trouble locating any speedsted disabling in the BIOS.
According to different forums, setting your power profile to "high performance" is supposed to disable it, but i have no way of telling.
The sound is still there, so i guess its not disabled.

Do i have to get deep into the bios and disable multiple settings to totally get rid of it?


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 Post subject: Re: noisy motherboard
PostPosted: Fri Jan 13, 2012 12:22 pm 
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Joined: Mon Dec 05, 2011 1:57 am
Posts: 5
and by speedsted i mean speedstep


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 Post subject: Re: noisy motherboard
PostPosted: Fri Jan 13, 2012 3:02 pm 
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Joined: Wed Jun 02, 2010 9:15 pm
Posts: 218
Location: Calgary, Alberta, Canada
page 3-9


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 Post subject: Re: noisy motherboard
PostPosted: Sun Jan 15, 2012 9:03 am 
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Joined: Mon Dec 05, 2011 1:57 am
Posts: 5
thanks guys, i disabled speedstep in the BIOS, and to my shock the horrible sound is gone!
I just can't believe it! :lol:
What a difference. No more annoying noise, a virtually silent computer!
I can't thank you enough!


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