Soldato
Coil whine is not just down to the card it can also be the PSU. Its where I discovered the bog roll method of detecting coil whine. Back when I had a GTX 580 I suddenly could hear coil whine. Opened the case and I thought it was coming from the graphics card. Some suggested they used an ear trumpet for detecting where it was coming from. Another didnt have an ear trumpet to hand (funnily enough) so used an empty bog roll. I scoffed at the idea, then I tried it and lo and behold it was like magic. Listening to my 580 via the empty tube and it was near silent apart from the fans pointed it at the power supply and it was actually coil whine coming from the PSU. So I got rid of my Antec and bought a brand new one which had good reviews and then no coil whine. So an empty bog roll saved me from buying a new GPU when it was the PSU.
This story needs to be shared... no so, the bog roll paper..