Depends quite a bit on case cooling and ambient air temperature - but as I said elsewhere : especially the Odyssey Main Menu is almost as good as running FurMark(tm).
I can be a bit more specific on that: it can be a tad worse(better) than Furmark actually. Just today I plugged in a customer's card I brought home from work, reported as potentially faulty/unstable during gaming. Since I'll have no builds ready for the next few days and it's the weekend, what's better than carry it back at home and put it under
real gaming stress?
Card is a RTX 2060, Inno3D so nothing exceptionally fancy cooling wise, first stress test with Furmark stabilized at 85-86 °C after a few minutes (closed case, hot day and a Ryzen 5600x above 80 °C on its pityful stock cooler, so far from ideal conditions)....there comes Odyssey main menu at uncapped framerate, 1080p on high-ultra...87 °C, a few seconds after launch. Take that Furmark!
(By the way, card seems to be working mighty fine for hours on end, the usual case of PEBCAK)
Capping framerates at 60Hz helped a good bit, found the card chugging along around 70-75 °C after a while of playing (nav beacon hunting though, I suspect any concourse could have been hotter).
@Threeofseven - unless you are playing at 4K, game seems to be doing something very wrong on your end though. During those tests (1080p, FXAA, everything on high with terrain, bloom and materials on ultra), I saw the surface concourses going from the usual 25-30 fps of my 1060 to 40-45 at worst bar minor dips of a few seconds, with most of the places and planet surfaces at a mostly stable capped 60. A 2080Ti should literally fly by comparison. I don't envy whoever has to sort through this mess.