I've used around half a dozen 3080, 3090 and 4090 cards, all have had some kind of coilwhine at 100% load. You'll get many saying their 4090 has "no coilwhine", then as
At idle though, which is what we're talking about, there is no coilwhine. Ask the same people to do a hearing test, and they'll not be able to hear above 15,000Hz in this test
Guess what I'm saving is, the vast majority of high end GPU's have coilwhine at 100% full load. Many have age related hearing loss (or went to lots of festivals!) and can't hear the higher frequency tones, so will sat their card has "no coilwhine".