Here the coil whine happens only if the onboard sound is connected to my 5.1 HT and the video card is processing something; to "fix" this wierd noise I use the HDMI audio instead, works fine, no annoying sounds.
So it's not the coil itself making the sound, but rather an interference that is somehow caught by the analog audio circuits and amplified by your speakers.
Interesting.
Christian
On sound off noise is same. So coils make noise on some scenes in games
https://forums.geforce.com/default/topic/779041/very-disappointed-by-all-gtx-970-too-many-issues-to-be-nvidia-/?offset=3
My Gigabyte 780 Ti's had terrible coin whine at first but in a few weeks of mining it completely disappeared as they burned in.
On another note, when I was autotuning with cudaminer the card was giving a high pitch screetching noise and as autotune went further the pitch of the sound increased. Sounded something like Space Invaders from the Atari.
