IgorsLAB published RDNA3 and too high hotspot temperatures on some AMD Radeon RX 7900 XT(X) Cause research A quote from the article:

Of course, you can discuss BIOS problems with the changed telemetry of the new RDNA3 cards, faulty thermal sensors in an alleged amok mode or even tangible mechanical problems, but in the end only AMD is currently able to give a comprehensive and honest answer.

  RDNA3 and too high hotspot temperatures on some AMD Radeon RX 7900 XT(X) Cause research