Recently i noticed a buzzing sound that was comming from my pc. I listened closly and im pretty sure its my gpu. I have a gtx 780 and when im doing normal stuff like browsing the buzzing isnt constanly there and its very quiet. But when im playing a very demanding game like pubg the buzzing would get very loud. In the loading screen its silent but when i load into the map it goes crazy. It doesent bother me that much because I always have my headset on but is this something serious? Do I need to replace my gpu?