Quote:
Originally Posted by Asmodian
This is called coil whine, it is a weird and annoying hardware defect that manifests with very specific loads.
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If it's following the Mouse, it's not Coil whine.
It's CPU whine or GPU whine.
If you have a delidded chip, you can poke the core with a thin wooden stick while it's running (with whine), and hear the pitch of the whine change.
That's how they diagonse capacitor /coil whine in psus.
There's nothing one can do about it. piezoelectric effect
The noise can also dump into the analog audio out if you're using them.
For PC audio it's always best to use Optical. Or some sort of hdmi/usb setup with galvanic isolation. (which really just uses opto-couplers, which is essentially optical)