I have a problem with my Radeon R9 280 and every time I play a game the card makes a strange buzzing sound. This also happens when using 3D modelling software like Zbrush and Modo. When I load a game the buzzing sound starts but when I save an close it the sound stops. It does not sound like a fan noise I have never had the problem with previous AMD cards. Is this nomal or is my card faulty?