I have a i7 7700k@4.4GHz, Corsair H115i AIO with Corsair SP140 fans exhaust push, Asus ROG STRIX Z270-E mobo, and using Arctic Silver 5 thermal compound applied with pea method.
During idle I get 50c-ish, during Windows start about 80c, 90c while playing anything from Minecraft to Grand Theft...