I foolishly bought one of the first multi-GPU cards, the HD4870X2 (I think Radeon?). Apart from almost no game using two GPUs and most just straight up not working, that thing ran hot like a smelter. I got that thing regularly over 105°C, and around 90°C seemed like it’s normal working temperature. Not overclocked, still lasted almost two years. Which, back then, was when you’re GPU was outdated anyways. I love that I can still play almost everything I want with a 2080 nowadays.