New pc making weird noise, help?

JC123 · 6 Apr 2019 at 12:03

I received my new pc from OCUK yesterday, but its making this strange noise, could someone listen and advise? Thanks.

https://www.youtube.com/watch?v=yc_Sg4oZkxw

JC123 · 6 Apr 2019 at 12:17

My CPU temp is 32. GPU is 38. I cant pinpoint the location of the sound as its such a high frequency.

JC123 · 6 Apr 2019 at 12:29

It's an ASUS strix 1060 6gb. I'll try and locate it again

JC123 · 6 Apr 2019 at 12:37

Here is the build config, but I have the asus 1060 instead of the zotac: https://www.overclockers.co.uk/ocuk...n32Y0bCds32Y6bCdt33X-bCdA32Y+bCdB32XwbCld3384

JC123 · 6 Apr 2019 at 12:51

Plec said:
Well, if you didn't specify a different PSU it will definitely be Kolink 600W in there. (And with it some poor random dolls head - private joke, ignore)

As for the noise 'i' could hear - i'm guessing it's all your case fans - if it's as noisy as it sounds you may want to adjust your fan curve.

As for the coil whine - the odds are it's the PSU (but could be the GPU) - you would ideally try and isolate this if you can before contacting OcUK. Kids are great at locating high pitch noises as they have a greater frequency range.

Thanks for the help, is the Kolink PSU really that bad? Should I replace it?

JC123 · 7 Apr 2019 at 13:22

EsaT said:
Cardboard tube or any such tube is helpfull for locating sound sources.

High frequencies would be caused by electronics.
While lower frequencies are mechanical in their sources.
For example 7200rpm HDD has primary frequency at 120Hz.

Now in case of this recording besides those usual lower frequency mechanical noises there's ~570-580 Hz spike, which is just unlikely high frequency for mechanical component.
Even if counting in fan having multiple blades.
upload

I guess it's that soiund you're hearing.

Have you observed if there's change in that depending on what you're doing with computer?
(for examply try playing back some video in youtube etc)

Just had another listen and the sound seems to stop when i stop the front bottom fan. How do I disconnect just this fan? Would it be dangerous?

EDIT: It's 100% the damn case fans, both of them together seem to be creating the noise

JC123 · 7 Apr 2019 at 13:59

Plec said:
Perfectly safe to disconnect - just follow the lead to the header/splitter lead that should be on the board (if it's connected that way). Or, from the sound of the fan nose - plugged straight in to a molex if it has that connection option too.

Are all your fans running at full throttle?

I’ll try this when I get back home. There’s a hub behind the side panel of the case. With plugs labelled with “fan 1” etc. Could this be where I disconnect the fans? Also, will having them disconnected permanently cause any issues? There a ton of space inside the case. The fans are at constant full throttle.

JC123 · 8 Apr 2019 at 20:09

EsaT said:
Interaction of two fans can cause noise, but that should be at lower frequencies.

That 570-580Hz frequency hints more to some kind of noise of electronics, like pulsating current.
Who knows if there's some kind dirty PWM control going on chopping 12V.

You're right, after disconnecting both fans and on further inspection, the PSU is making the noise, but not the fan. Not sure what to do anymore.

JC123 · 8 Apr 2019 at 21:33

EsaT said:
Replace it with something whose design isn't from the time of Hadrian's Wall?
Because in PC tech terms 80+ efficiency is pretty much ancient.
Not to forget that PSU being at best 500W PSU.
Assuming anything in sticker can be trusted when it's (like many Kolinks) misleadingly advertised with some arbitrary peak power.
It's kinda like if car add said it can reach speed of 300 km/h... But only if dropped from rear door of cargo plane at 5km.

Bitfenix Formula would be my starting level recommendation for not shoe string budget PC.
https://www.overclockers.co.uk/bitfenix-formula-series-550w-80-plus-gold-power-supply-ca-22y-bx.html

That semimodular Antec Earthwatts would be next step up for pretty high end performance.

Next time you need to check some sound you can record, besides cardboard etc tube, use Spectrum Labs.
https://www.qsl.net/dl4yhf/spectra1.html
Simple spectrum analysis is easy after correct audio input device is chosen and it's actually active in settings of Windows/sound card.

LMAO thanks man, may I ask if the Corsair TX550m would be sufficient?

JC123 · 9 Apr 2019 at 12:00

EsaT said:
Corsair TX would be good, just remove link.
Forum rules forbid mentioning/linking to competitors.

Thanks for the help dude, ordered the tx550m, should be here tomorrow, I'll update on the noise after installation.

JC123 · 10 Apr 2019 at 20:33

PSU installed (only cut myself once!), noise has gone. Thanks for your help guys, much appreciated.