I found out that my graphics card is suffering from coil whine.
So that means that when I play a game I always hear an annoying peeep.
but I noticed that this beeping ONLY appears in Minecraft. Is that normal?
Well maybe your graphics card is overloaded at Minecraft
Do you play with shaders or something like that?
Set a limit on the FPS, because coil whine like to come when you play in games with over 200 FPS (with some graphics cards even with less FPS).
Consumes electricity unnecessarily and graphics card becomes unnecessarily hot.
With a 60Hz at 60 FPS everything above is hardly usable (depending on the game). With a 144Hz monitor 144FPS etc.
Activate VSync so that you do not exceed 30/60 fps, then it should work without problems.
