Please bear with me, while I explain my situation, its a bit long winded.. but it's wired.
So just yesterday I started getting this coil whine from my graphics card (not high pitched squealing), it's not a new card I have had it running in my system since 2015 and it is water cooled so no fans are on the card.
I know it is coming from my GPU, after testing my system with just onboard graphics and no other component was making a sound.
Now I know you can't do anything about coil whine, but what is really wired is that it's happen when system is idle!
As soon as I interact with windows whether it's opening up folders go going into settings etc... it stops for a split second before it's back.
What's really bizarre is when I open up any browser (no web page loaded), it goes dead quiet, like the coil whine wasn't even there.
Browse some webpages and the whine is back, but not as loud.
Tested it in a couple of games (5min test) and coil whine was present in 1 game FPS locked at 60, but not as loud as when system is idle. The other game I tested had no FPS lock, so I could hear the whine below 60FPS, but as soon at FPS was between 80-160 it was dead quiet.
When game play was at a certain scene, FPS just went up well pass 160-230 even though before in the same place it wasn't doing that FPS. At this point I would hear the high pitched squealing from the capacitors I presume and I could hear some coil whine again.
Exit the game and back at the desktop and the coil whine is gone.
While typing this out I went back to the desktop a couple of times and no whine, now when I am about to submit this post the whine is back.
I am thinking that it might have something to do with the PSU voltages, it seems when ever there is no load on the GPU the whine is very present and annoying. Put a little bit of a load on GPU and it goes a bit quieter or out right quiet like it use to be for the last 4yrs.
Anyone had an experience like this or know of a way I could do something to get ride of this annoying sound?
FYI I don't know that much about PSU voltages etc... but ran GPU-Z and logged the results (before game play) and there was no bouncing around of voltages.