I have a RTX 3080 in my 14th Gen i7 Gaming PC (which I rarely use).
Recently when I have used it for gaming, the heat coming off my mid tower case is huge. It heats my 4x4m2 room in about 5-10 minutes.
The outside of the case is uncomfortably hot to touch.
I haven't taken any measurements, but even without it, it seems really hot.
Computer seems stable whilst gaming however.