I have once clocked my CPU down to 400 MHz for a week or so (i7-7700K I think it was) when the pump of my cooling loop died to keep it below 100°C, although it

I have once clocked my CPU down to 400 MHz for a week or so (i7-7700K I think it was) when the pump of my cooling loop died to keep it below 100°C, although it would have throttled down on its own once at thermal limits. Other than games running terrible (of course, duh) I couldn't really tell much of a difference. Some things were slower like compiling code or things like 7z but it didn't feel like a throwback to the late 90s because what made computers slow those days were HDDs. Oh, and there is GPU acceleration for so many things these days ... like watching 4K videos was no problem at all.