The coil whine ain't that bad, just more noticeable than the 1080 which is how I picked up on it. I actually think it's the PSU. I bet a replacement of that will sort it out. Still confused why Cinebench OpenGL run at 170 FPS I hear absolutely no coil whine what so ever. It's dead silent.
As for the Alder Lake upgrade, that will be one expensive gig. A PSU upgrade will be needed for sure but also a new AIO cooler for 1700 pin as the H150i isn't optimal from what I have read.
The 8700K in BF 2042 128 player servers, is getting a beating.