Hello. I'm new to computer building and recently built a PC. My problem is, when I decided to test my RX580 in Furmark, video card just shutdown after 5 minutes at 76° but fans and other parts remained working. After I did hard restart I haven't got any warnings from drivers. I believe that my PSU is too weak maybe? GPU is behaving normal in all games I play.
CPU: Ryzen 5 2600
GPU: Sapphire RX580 Pulse 8 gb
PSU: be quiet! pure power 11 500w
Motherboard: Gigabyte B450M DS3H
RAM: G.Skill Sniper X F4-3200 2x 8gb
CPU Cooler: Deepcool Gammaxx 400bl