Question screeching/squeling

yaxy123

Commendable
Aug 3, 2017
80
5
1,565
6
Hi,

Pc specs: https://pcpartpicker.com/list/GkDLtg , i have 2 hardrives as well.
Noteworthy parts: I7-9700KF, Gigabyte Aorus Z390 Pro WiFi and Corsair CX750M.
Bios: F10 (latest)

Recently upgraded my cpu from an i5-9600K to an i7-9700KF and it has been screeching for about 1 week now, I've replaced my PSU without luck. My soundcard does not effect the sound.

Sound is coming from CPU when listening from
the backside, I previously thought it was the PSU as it made noise but it seems that the PSU only has coil whine, CPU makes screeching noise and harddrive the occasional screech. The noise is clearly from the CPU and is maybe effected by load but it didn't previously so it seems to be random. It usually happends and it was very clear when booting or updating windows. I changed Windows power settings to balanced without rebooting and no difference could've heard immedietly and processor ran the same voltages e.t.c.

CPU is running at a constant 4.6Ghz according to software because of the new turbo intel is using. Voltages range between 1.25-1.33V but the first few days after it started it ran around 1.2- 1.28 and didn't depend on load.

I've tried running at 3.6 Ghz and it seems to be less loud but losing 1000 points in cinebench r20 and 10 fps in tomb raider isn't favourable since it happends anyways.

The motherboard vrms I don't really want to check because my cooler is in the way and is a pain to remove.

Thanks for any help!
 

Aeacus

Glorious
Herald
Open the side panel of your PC (remove TG side panel), turn PC on and put your ear to it to hear from where the noise exactly comes from.

But based on your current description, i'd suspect CPU cooler fan(s) to be the culprit.
Based on CPU cooler fan life expectancy (70.000 hours), it seems that fans have (double) ball bearing in them. Out of all fan bearings (sleeve, ball, fluid-dynamic, mag-lev), ball bearings are the noisiest.
 

Aeacus

Glorious
Herald
There are no moving parts inside the CPU which could make that noise. Also, i've never heard that CPU could make any noises (e.g coil whine) because electricity paths in the CPU are microscopic. And since CPU is wedged between MoBo and CPU cooler, any noise it could generate would have very hard time escaping.

Most of the times, strange sounds from PC are either coil whine (PSU or GPU) or vibration noises. MoBo can have coil whine as well but it's very rare.

Here, i don't know what that 2nd noise near CPU socket could be. MoBo VRMs would be my last guess.
 

yaxy123

Commendable
Aug 3, 2017
80
5
1,565
6
There are no moving parts inside the CPU which could make that noise. Also, i've never heard that CPU could make any noises (e.g coil whine) because electricity paths in the CPU are microscopic. And since CPU is wedged between MoBo and CPU cooler, any noise it could generate would have very hard time escaping.

Most of the times, strange sounds from PC are either coil whine (PSU or GPU) or vibration noises. MoBo can have coil whine as well but it's very rare.

Here, i don't know what that 2nd noise near CPU socket could be. MoBo VRMs would be my last guess.
Yeah I was thinking that but it feels unlikely since the board is using good VRMs but I'm in contact with Gigabyte and will probably contact my retailer to RMA my PSU and MB.
 

Aeacus

Glorious
Herald
Do note that your Corsair CXm PSU, at best, is mediocre quality PSU. Your PSU alone could be reason behind all those noises since PSU powers everything and thus, is the most important component inside the PC. Also, since you have very expensive hardware in there, i wouldn't look towards anything below great quality PSU. In other words, i'd look towards any Seasonic PRIME series PSU in 700W range, preferably with 80+ Titanium efficiency. Or when short in cash, bare minimum would be Seasonic Focus+ series,
pcpp: https://se.pcpartpicker.com/products/compare/64cMnQ,dCs8TW,VfM323,cNsmP6/

Warranty wise:
Corsair CXm: 5 years
Seasonic Focus+: 10 years
Seasonic PRIME: 12 years (includes all PRIME models: regular, Fanless, AirTouch, SnowSilent, Ultra)

All 3 of my PCs: Skylake, Haswell and AMD are also powered by Seasonic. Full specs with pics in my sig.

Also, PRIME Ultra 750 (80+ Titanium) is the best 750W PSU money can buy at current date and with it, you'll get the highest efficiency (92%), tightest voltage regulation (0.28%), longest hold-up time (30ms), lowest ripple noise (14mV) and longest warranty (12 years) there is. Fully modular cables and toggle-able Premium Hybrid fan control too,
specs: https://seasonic.com/prime-ultra-titanium
review: https://www.hardocp.com/article/2018/01/15/seasonic_prime_ultra_750w_power_supply_review

Btw, Seasonic is the only PSU OEM in the world who gives 12 years of warranty for their flagship line of PSUs (PRIME series). Other PSU OEMs/brands give max 10 years of warranty for their PSUs.
 

yaxy123

Commendable
Aug 3, 2017
80
5
1,565
6
Do note that your Corsair CXm PSU, at best, is mediocre quality PSU. Your PSU alone could be reason behind all those noises since PSU powers everything and thus, is the most important component inside the PC. Also, since you have very expensive hardware in there, i wouldn't look towards anything below great quality PSU. In other words, i'd look towards any Seasonic PRIME series PSU in 700W range, preferably with 80+ Titanium efficiency. Or when short in cash, bare minimum would be Seasonic Focus+ series,
pcpp: https://se.pcpartpicker.com/products/compare/64cMnQ,dCs8TW,VfM323,cNsmP6/

Warranty wise:
Corsair CXm: 5 years
Seasonic Focus+: 10 years
Seasonic PRIME: 12 years (includes all PRIME models: regular, Fanless, AirTouch, SnowSilent, Ultra)

All 3 of my PCs: Skylake, Haswell and AMD are also powered by Seasonic. Full specs with pics in my sig.

Also, PRIME Ultra 750 (80+ Titanium) is the best 750W PSU money can buy at current date and with it, you'll get the highest efficiency (92%), tightest voltage regulation (0.28%), longest hold-up time (30ms), lowest ripple noise (14mV) and longest warranty (12 years) there is. Fully modular cables and toggle-able Premium Hybrid fan control too,
specs: https://seasonic.com/prime-ultra-titanium
review: https://www.hardocp.com/article/2018/01/15/seasonic_prime_ultra_750w_power_supply_review

Btw, Seasonic is the only PSU OEM in the world who gives 12 years of warranty for their flagship line of PSUs (PRIME series). Other PSU OEMs/brands give max 10 years of warranty for their PSUs.
I wanted to get a seasonic but the stores I got my pc parts from didn't have it and I was already buying from 3 retailers. And here in Sweden if the product causes extra costs like shorting out and damaging other components it would have to be paid by the seller during the warranty period. Since I'm planning on having my pc for 5 years going for a mediocre is better than spending 200$. Your answer is good for other countries, but here I just wanted to know what is broken so I don't return a functional product.
 
Last edited:

Aeacus

Glorious
Herald
Well, your PC operates normally and you can use it just fine, right? So, no component inside the PC is broken. Coil whine, vibration noises and the like are just unfortunate byproduct of a working PC. Some component combinations could be more prone to this than others.
 

yaxy123

Commendable
Aug 3, 2017
80
5
1,565
6
In case anyone else gets this problem I found a solution:
Go into bios, manually change cpu multiplier to turbo amount or less/more depending on Cpu or how much of an overclock you wanna do. Go into advanced settings and disable all C-states (You might get away with keeping some on) then save, boot and it stops. So basically overclock the cpu and disable C-states.
 
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