Cpu non regular tick\scratching noises when pc heating up or cooling down.

[sew999]

I have non regular scratching\ticking noise when pc is heating up or cooling down. Its coming from cpu fan. I am sure , that not any wires are hitting on blades. When my graphic card is heating up ( after loaded a game ) im getting no regular ticking noises. Or when quiting games ( cooling down ) the same. But during load all is quiet, no ticking.
I was thinking that is my GPU but i close my ear and its from cpu fan.
I ran prime95 stress test for the cpu and there was no sound. So i dont understand this.
Why i have non regular ticking noises from cpu when my gpu is heating up?
when i test prime95 ( most cpu stress ) i dont have that ticking noises from cpu.
Problem started after i installed my new gpu Ichill 980 Ti 3x OC. On my previous 980 ti reference i dont have ticking noise from cpu.
Any ideas?

 

It sounds like this:

 

https://www.youtube.com/watch?v=Y3McPTzeLhs

[shypin]

coil whine?

 

cant hear anything from video

[OfficialJsP]

Only ticking I hard is coming from you moving the screen I think other than that I cant hear anything else.

[sew999]

When he closing macbooks its tick.