So recently, my GPU sped up for no apparent reason, I wasn't playing or doing anything that would require really any power from my graphics card besides displaying my screen, and then all of a sudden, it just starts speeding up for no reason, it was at 24 degrees C. and then it went down to 32 Degrees C. So it didn't require any fans to be running in the first place, I have a Sapphire AMD Radeon RX 480 8GB. If this has happened to you with an AMD or just any graphics card you've had at all, please let me know, A simple restart fixed it, but I want to know if it may happen again, because it scared the living balls out of me.. Lol.