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Reducing noise level of PC

Hi

 

I thought my original NZXT case fans were making my PC noisy but having replaced them with silent Noctua fans, even if I set them to 'off', it's still quite loud overall. I can even hear it through my headphones, especially if playing a game (when all the fans run). I think the PSU or the CPU cooler are to blame for the noise. What's the best option for replacements? Ideally, I'd like to order some of it from Amazon UK as I've got a few gift vouchers.

 

Spec is:

  • ASUS ROG Strix Z370-H Motherboard
  • Intel i5 8600k with Hyper 212 evo
  • Sapphire Nitro RX480 8GB
  • Corsair TX750 (non modular) PSU
  • Various HDDs/SSDs
  • NZXT S340 case with front + rear Noctua fans

 

Thanks

 

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Truthfully, the loudest component is likely your PSU. You should find a semi fanless or Eco mode PSU that has a switch to turn off the fan unless it reaches above a certain threshold. This will reduce your noise considerably. 

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Surely you can just put your ear near the different components and figure out which one is making the noise?

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Do yourself a solid, and be aware of what ramps up when you enter a game. some investigative work will go a long way. The three most common fans to be super loud is the PSU, GPU and CPU fans. My money goes on either the PSU or the CPU. and considering you use a Hyper 212 Evo on a K series CPU, Id make the assumption you are doing a minor OC. OCing will cause heat which in turn causes noise. 

 

If not ,Im still willing to bet if the pc isn't on carpet, then the CPU is to blame. That is you haven't been altering fan speeds within BIOS, which is also a possibility.

 

As far as investigating, take a moment to look at your PC when you enter a game, if you feel comfortable, while the side panel is off. you will be able to tell straight away what fan is causing the problem.

 

you can even reduce the variables by unpluging all case fans temporarily to eliminate confusion. it won't harm the PC by any means. @balanceballs

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29 minutes ago, balanceballs said:

I think the PSU or the CPU cooler are to blame for the noise.

Instead of just "thinking", open up the PC and listen to which of the fans is the noisiest. It's pointless to plan on what components to buy before you know which one is the problem in the first place.

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28 minutes ago, schwellmo92 said:

Surely you can just put your ear near the different components and figure out which one is making the noise?

Yeah, you'd think so but the noise is consistent across the entire spread of components so I can't actually identify what's making the most noise

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1 minute ago, balanceballs said:

Yeah, you'd think so but the noise is consistent across the entire spread of components so I can't actually identify what's making the most noise

Disconnect the case-fans, then you only have to listen to the CPU and PSU.

Hand, n. A singular instrument worn at the end of the human arm and commonly thrust into somebody’s pocket.

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On 1/24/2019 at 7:41 AM, WereCatf said:

Disconnect the case-fans, then you only have to listen to the CPU and PSU.

There are still hdd's which are often noisier than fans. I recommend booting the system without hdd's powered to isolate the noise.

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