Fluctuating CPU core temps causing very loud Noctua fan noise!

[AdladUK]

It depends on the motherboard, Gigabyte might be pushing for some very high voltages since if they add some kind of MCE/Performance Upgrade option by default, they have to account even for the worst 7700K samples.
If you find the option and turn it off, you should be fine.

I've taken another look now and still can't find anything that matches MCE. I also updated the BIOS to the latest version as it said on Gigabyte's site this for the latest version: "Update CPU micro code to fix HT flaw issue". That did nothing.

Would Voltage Optimization or CPU Vcore Loadline Calibration have anything to do with it? Or CPU Vcore being set to auto instead of normal?

Anyway I think I've had enough for tonight. I have a PSU that is silent without the fan spinning, a graphics card that is silent without the fans spinning, but a stupid CPU and Noctua cooler sounding let a jet engine starting and stopping every few seconds. It's driving me crazy.

If this is indeed just a BIOS setting what the heck were Gigabyte thinking? It makes absolutely no sense for a CPU to have core temps jumping 30c every few seconds like this, especially when at idle within Windows

 

[muon]

Use CPU-Z to see what the voltage is spiking to.

What you've mentioned, Voltage Optimisation, Loadline Calibration and Vcore, are manual overclocking settings. They wouldn't overclock. They should be on auto/automatic i.e. default.

Reset the bios and turn off XMP memory profiles. See if that makes a difference. If it does then then XMP is triggering an overclock. However, since you want XMP you want to find the setting which gets triggered (other than memory overclock) causing the processor to overclock.

edit:

What is the setting below set to? What options are available other than Auto?

 

[AdladUK]

Hi muon, thanks for the reply. Both CPU Upgrade and CPU Clock Ratio are set to Auto. The other settings on CPU Upgrade are all different models of Intel processors at different clock speeds. About 10 or 15 options.

I've installed a low noise adapter on the Noctua fan and also messed around more with the custom fan settings in the BIOS. It's honestly much better now and I think it will be okay. Would have preferred to have determined the exact problem/solution, but it's not so bad

 

[AdladUK]

I ran Malwarebytes and the fan went to around 1,400 RPM, which is pretty high and noticeably audible. At idle now it's around 800. Here's the CPUID HWMonitor screen whilst running the scan: https://i.imgur.com/ySyspiO.png

And here's when it's stopped: https://i.imgur.com/T5IaAGC.png

 

[solidair]

Try setting the multiplier to manual to perhaps 42x or lower on all cores that way they will run higher but the fans shouldn't be ramping as much.
I don't know how you feel about overclocking/underclocking but you could see how low you could drop the voltage manually too and that would also give you more consistent heat /sound.
Adaptive settings have come a long way but if something in your rig is having problems sometimes better to keep things a bit more constant.
Hope this helps.