I have had an iMac 5k 2017 for a few months now. The thing is that I hear some electrical "static" buzz sound whenever I do things such as scrolling on a webpage, minimizing the windows, and etc. No noise is made whenever the iMac is just on doing nothing. It's not too loud, but I can hear it when I put my ear to the exhaust. Do the 2017s have coil whine with the Kaby Lake processors or the GPU? I hope it's just coil whine and nothing serious. Thank you! Happy Holidays and a God bless.