can you help me how to reduce coil whine ?
Need proof it is from card and not from cheap psu ?
If you verify that the Coil Whine is coming from your GPU card and not from the Motherboard's VRM or your PSU there is not much you can do except to sound proof your computer case as much as possible or return/RMA the GPU card IF the coil whine is excessively loud.
I would first try a previous AMD driver in case the Coil whine is due to the latest version you have installed.
Coil whine is just electrical/electronic noise from electronic components in your high powered hardware like the GPU, PSU, or VRM under load when more power is required. The heavier the load or power needed the higher the coil whine will be.
If the GPU manufacturer won't approve a RMA for your GPU card there are YouTube Videos that shows some work around methods to try and insulated your GPU card noise. Don't know how trustworthy those methods are though.
First, check where the coil whine is coming.
If its from PSU, my suggestion is: You should start worrying. I don't see that often and when I did.. things went boom or will go boom eventually. Neither my Corsair RM or RoG Strix from Seasonic did any coil whine.
VRM's can do it too, but again, good boards with good VRM's won't be a problem in normal conditions.
GPU's tend to be the greatest culprit, at least mine is. VSYNC ON or Freesync normally does the trick in some games, and there are options inside adrenalin can help you too. If you can't loose every fps you get, then its best to put some headphones, fans to maximum and pump the OC.
what is the make/model of your power supply? ..that is probably the culprit causing your GPU to "whine" . .or it's whining itself when the GPU is under load
I had a GTX 460 that made that terrible noise you are talking about. Warranty changed the GPU. That´s my suggestion.