leaden vortexCoil whine is the natural sound of the magnetic components in the powered circuits vibrating to the frequency of the current passing through them. The same phenomenon can be witnessed at a large transformer or your local power substation. That buzzing you hear is a lower frequency due to larger parts and higher amounts of power. You can actually change the frequency and voltage in certain settings to change the sound the transformers make.
The reason it is so prevalent and annoying with GPUs today is because we are sending more power down smaller circuits with smaller components that vibrate at higher frequencies. So you get a higher pitch whine instead of a buzz since the parts are smaller and the current used is lower. Once again, this is all natural. The more current, especially, the more dynamic the load, the more whine you'll get with changing pitch which can be really annoying. Since whine goes up with current and by extension power draw, you can expect it to have gone up considering how power draw went up on high end cards compared to just a few years ago.
The only real way to "get rid" of coil whine, which in reality, you can't, you'll just be moving the whine to a part of the spectrum that is inaudible to most humans. This means yes, all devices whine and make noise when powered, you just don't hear it. This is done by making parts heavier, thicker, and compressed materials, ie: by making the design more expensive by adding more metal. Which is why most companies don't do this, if anything it adds to the potential for things to go wrong by adding more parts and adding to an already proven design. Just to stop some noises, not to get any practical performance gain. Also, since there will be more conductive material in the design, it will be less power efficient and require more insulation to stop leakage which costs more.
If you have issues with coil whine, it is recommended to move the PC away from your desk or to another location, or alternatively drown the sound out with noise-cancellation headphones or buying a lower wattage (and lower tier) GPU. Most, if not all AIBs do not accept coil whine as the reason for warranty/RMA.
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