Can you do a simple test to see if it's coil whine/noise, download msi afterburner or gigabyte guru and put the fan to 60-80 % to see if the noise is actually coming from the fan or not.
If it's in fact the fan, it may be the ball bearing (you can find how to disable a fans on YT and ad oil/grease ...) but it might simple be the metal frame holding the fan that is vibrating