For our temperature testing, we measure the peak GPU core temperature under load. A reading under load comes from running Cyberpunk 2077 for 30 minutes.
Thermal performance is an area where the Hellhound has made significant improvement versus AMD's own design. The OC BIOS, for instance, drops GPU temperature to 60C, with the hot spot hitting 81C. The Silent BIOS only ran 3C hotter in our testing, but both results are 13-16C cooler than what AMD was able to achieve with the reference card.