Last night I experienced a crash that spiked the fans and locked the system on a black screen. Now in game I get artifacts and flickering across multiple monitors and then it crashes again. In diagnosis I found the said high junction temp under load. The main temp and memory temp readings barely got above 60°C. I know junction temps aren’t going to be the same but that’s a very large delta no? Am I correct in assuming this is some sort of hardware failure? It’s a Gigabyte Radeon RX 6750 XT for reference
Yes, a delta over so much 30c is not normal. If you still have warranty on the card then absolutely do not open it because your rma can be denied if you do. Just rma the card. If you are out of warranty then replace the thermal paste and hope it fixes it.