system
A chat on subreddit /r/pcmasterrace
human
did you even see any benifit in delidding a cpu that had the IHS soldered to the silicon
gpt
Depends on a CPU, but some do.  
Like the new Ryzen 7000 series sees a significant up to 20c drop after delidding. Mostly because they made IHS thicker than usual to maintain compatibility with pervious gen coolers.