I'm aware that the chokes noise is just could be annoying, but else, it's a sign that something is working not as it needs to be. So I did some test, and yes, I have the same version of RC installed as was previously. I tried to lower the multiplier of my CPU to the minimum(35(instead of 42)) and power limit by 165W(instead of 200-210W), the CPU before(new one) did not exceeded that value.
Result is: choke are whistling less, but still noise exist.
Of course it could be indicator that I have weak VRM, but none of the processes do such thing besides Railclone, and while it doing that it not consuming anything near even 165W, so it's different kind of load. So I want to figure out what cause that stress to the VRM. By the way my VRM support load up to 260W or even 280W, don't remember actual proportion of amperes and volts.
To reproduce this noise I only needed switch from Disabled to Embedded in Proxy Cache. I want to upload the scene, but it's around 10MB with just RC elements, so I can't.