Unrelated to PG's post... I had no clue what MightyApp is so I went to their website [0]. When I scrolled to "Work without the fan noise" section on the homepage my fan started to work pretty hard. Haven't checked if they intentionally got the fan to work, but it was a nice coincidence.
They could do the equivalent of those images comparing Full HD and 4K side-by-side, by having a button "with MightyApp" which reduces CPU load and makes your fan stop.
[0] mightyapp.com