Just wanted to chime in here:
Over the weekend I had the same issue.
Gigabyte 3080 TI, Thermaltake Platinum 1200W PSU. The issue is not power delivery. ONLY Diablo 4 causes this.
I put this car through various loads all day long from CAD, video editing and playing Triple A title games. No other game crashed like this EXCEPT New World. New World had a similar issue where it was killing 3090s and crashing other cards. This seems very similar.
My card did not brick, but like others, random crashing between 15 and an hour of game play. Sometimes it would reboot the machine, other times it was a crash to desktop.
Ryzen 5900X
32GB DDR 4 3600MHz CL14
Sabrent Rocket 4.0 1TB Drive
Gigabyte 3080Ti OC
I can confirm my buddy with his 3080 Ti also experienced the same issue.
The issue is with the game, not with the card or power delivery. I even can max out the power draw on this card with benchmarks and 3D modelling. Temperature is not an issue, it’s in a water block and doesn’t break 45C at full load and power draw.
The issue is a bug in the game, hands down.
Capping framerate does NOT resolve the issue. It mitigates it. I tried this initially because it was suggested when we were having the issue with New World as well. It will buy you another 30 mins of gameplay max. My testing with GSync off did not help, HDR off, did not help, even reduced all games settings to low. This did not have an impact whatsover. I reduced the resolution from 1440p to 1080p, and still no difference.
I then uninstalled the game Saturday evening then reinstalled it to another SSD. A WD Blue 1TB. Same issue.
Again, I have no other issues with this card when playing any other game, including New World now that they have patched it. I can max out every setting in every other game and it plays fine.
This bug needs fixing and anyone that tells you it’s not a bug is lying to you.