[SOLVED] Sizzling electricity noise near back of CPU

[HiThereYes]

HI all, I finished my build about 2 weeks ago and I've been hearing electricity noise from it every time.

During startup and on lite use you hear a lot of electricity 'sizzle' noise, audio.

I swapped out my intel stock with a mugen 5 and the problem is still there.

When under CPU stress, the noise starts to go away but when going back to near idle or light use, it comes back

I'm wondering if you guys can give some ideas o nthe cause or some fixes, thank you.


Heres my specs:
Asrock Z490 ITX ac
i5 10400
scythe Mugen 5
ROG RX 580
team t force 16 gb ram
Corsair SF600 Platinum

 

[sizzling]

What exact psu do you have?

 

[HiThereYes]

Its a Corsair sf 600 plat

 

[Phaaze88]

Motherboard VRM dynamically switching frequencies depending on load. It's normal.
I'll hear it too if I lower my fans enough.

 

[HiThereYes]

I never had this problem occur with my other motherboards, just this one.

The noise has gotten worse as it's making this now, noise

 

[Phaaze88]

I had to turn that way up to be able to hear it.

Still, it doesn't sound out of the ordinary.

 

[HiThereYes]

My phone didn't pick it up that well, but in real life the noise was audible for about 3-4 feet away from the pc.

 

[Phaaze88]

I, at least, don't know what else to tell you beyond it being VRM switching frequency.

Maybe the VRMs on that board aren't that good 🤔

 

[HiThereYes]

Yeah I think so, I've seen a lot of problems similar to this on asrock boards online.

Thank you for the help and diagnostic!