PC Grinding noise narrowed down, please advice

kokotas

kokotas

kokotas

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11 Aug 2012
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14
Hello there, I need your help!



This is a new rig recently built, specs are below:

Cpu: Intel 10900K (SP 81)

Mobo: Asus Maximus Apex XII

GPU: Asus tuf 3080

OS drive: 970 Evo Plus nvme 500GB

PSU: Seasonic 750W Prime Ultra Plat

Sound card: Creative Sound Blaster AE-7

Cpu cooler: Arctic Liquid Freezer II 360

Fans: x7 Arctic Bionix P120 pwm

Ram:G.Skill Trident z RGB 2x16GB B-dies

Case: Lian Li o11 Dynamic XL



So this is most perplexing for me as I have never bumped upon something like that before. Thing is the noise source is kinda difficult to isolate. Here is a sample so you can get the idea:

https://vocaroo.com/Pur5vPAzuPa



Now I have managed to find the exact reason which causes this noise. With that said, I'm still lost as to where it's coming from. Is sound like it could be coming from the psu, the gpu, the pump or even the motherboard itself.

So here's what's happening. Whenever I play a video using NVIDIA Cuvid as the video decoder I get this super loud grinding noise. If I change the decoder to DXVA2 (Copy-Back) then the noise is almost inaudible. In both cases the noise gets louder if I go full-screen.



I'm worried because after sticking my ear next to the open case for a few minutes, I'm 80% sure the sound is coming from either the pump or behind the pump... Weird thing is the using prime95 or furmark doesn't produce any such noise, at least continuously like when playing back videos.

I would appreciate any insight that will help me isolate the issue and contact the respective support team.



One more thing to notice is when the noise abruptly subsides for a second before it starts again, this translates to frame dropping or stuttering in the video.



Ok, last thing I can do to demonstrate the issue. Hoping for the right person to see this and provide an answer:

(kindly turn up your volume)



Final attempt at finding help:

disabled hardware acceleration for HEVC, loading the CPU, alternating between window mode and full screen:

https://vocaroo.com/dwlzrjzvaob

re-enabled hardware acceleration for HEVC, loading the GPU, alternating between window mode and full screen:

https://vocaroo.com/dxSvJircyHa

BTW I manually stopped the pump fan, gpu fans, psu fan and that didn't affect the noise. At this point, I think it's the pump or the PSU... I swear the sound comes from the pump. Or is it possible for the motherboard itself to make such a noise?
 
Try and get it to make the noise and then unplug the pump for a few seconds to see if it goes away. Whilst not ideal, the pc will be fine for a short while without the pump. If it stops, you know it's the pump.

Otherwise, could be a wire getting trapped in a fan that only turns on under load - possibly the PSU like you say
 
Have you tried just loading up the cpu? Cinebench r20 will stress it but leave the gpu alone (though you might want to temporarily lock the gpu fan at 10% or to be sure)
 
Prime95, didn't do anything.

So I kind of isolated the issue to gpu and psu. Thing is this very bizarre reaction can only be triggered with specific software or should I say renderer.

By using megamix lav filters pack, and setting up as:

Potplayer
Madvr renderer with 4k profile
Lav video decoder, using nvidia vivid

Playing back a big video file like 4k to 5k, 10bit hvec.

This causes the gpu to reach 90% utilization and that's the only scenario that I get that noise. Furmark was normal. Playing the same video with mpc-be and default renderer and settings, again no noise.

My conclusion is madvr and the specific software setup causes a very high power draw from the gpu which causes that noise from some part of the system, most likely the gpu itself.
 
I’d say that’s the sound of fan blades rubbing the fan casing due to bearing failure.

Might be worth booting into BIOS control panel and ramping up the CPU and case fans one at a time to find the culprit.
 
Sounds like bearing failure. Bearing failure can make a grindy noise at specific RPM so when you try to test it you need to gradually increase the RPM of the fan until it happens. Too slow or too fast and it won't make a noise. Could be either the GPU or the PSU. I would take control of the GPU fans using Afterburner and under idle load just crank them up 100rpm at a time to see if they go through a patch of being noisy.
 
Just to confirm , you manually disconnect ed all fans in your pc and u still have a sound?

If so, I would suspect gpu.

Take gpu out, run on integrated gpu and see if it goes away.
If it does the u have a target.
 
pp111 said:
Sounds like bearing failure. Bearing failure can make a grindy noise at specific RPM so when you try to test it you need to gradually increase the RPM of the fan until it happens. Too slow or too fast and it won't make a noise. Could be either the GPU or the PSU. I would take control of the GPU fans using Afterburner and under idle load just crank them up 100rpm at a time to see if they go through a patch of being noisy.
Click to expand...

Wouldn't stopping the fan manually when the issue is audible cause it to subside or disappear?

Benass said:
Just to confirm , you manually disconnect ed all fans in your pc and u still have a sound?

If so, I would suspect gpu.

Take gpu out, run on integrated gpu and see if it goes away.
If it does the u have a target.
Click to expand...

No spare parts at home. Mobo doesn't support igpu.

Chaos666 said:
There might be a cable that goes to the fan on the gpu..
Click to expand...

Nope, I wish it was that simple :p

This is more or less solved. My findings of madvr causing this coincide with the reddit post so I'm ok with that. I'll just not use madvr as a renderer.

https://www.reddit.com/r/htpc/comments/eijppr/madvr_and_coil_whine/
 
Yeah tell me about it...When I realized this sound wasn't coming out of any fans or the pump, I was going a bit crazy since there was nothing else for me to check. So I went back to checking software side and that's how I noticed that it only happened when using mdvr. Really the 4k preset in megamix lav filters make the gpu components sing in a very ominous tone lol
 
kokotas said:
Yeah tell me about it...When I realized this sound wasn't coming out of any fans or the pump, I was going a bit crazy since there was nothing else for me to check. So I went back to checking software side and that's how I noticed that it only happened when using mdvr. Really the 4k preset in megamix lav filters make the gpu components sing in a very ominous tone lol
Click to expand...
coil whine is always louder under load... same in games.. when you have vsync it may be fine .. but when gpu is working 100% under stress it can scream!!
Yours is still on a whole other level
 
Chaos666 said:
coil whine is always louder under load... same in games.. when you have vsync it may be fine .. but when gpu is working 100% under stress it can scream!!
Yours is still on a whole other level
Click to expand...
I think I had it with my old PSU: it was very annoying and made me think that something was wrong with the GPU until I started investigating on how old the PSU was (had just under 1 year of warranty left). Decided to bite the bullet and get an over spec PSU and the noise went away.
 
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