^ Ignore this guy. He doesn't know what he's talking about.
That does not sound good at all. When was the last time you cleaned the inside of your PC? Open the hood and check and make sure everything is dust free and cables are on tight. Carefully remove the GPU and make sure there are no loose parts (Possibly the crackling noise). If the problem still persist, try rolling back drivers/updating them. If your still having the problem, you might want to look into getting a new GPU, or checking your warranty if you have one.