Basically just the CPU fan, case, and PSU (if you're lucky). If someone can figure out how to get Doom running on just those 3 things, young people will be able to ascend.
I wasn't being a dick for no reason - I was being a dick because I thought THEY were being a passive aggressive dick, much like how you assumed I was "gatekeeping knowledge to feel superior". Bad assumptions all around here.
I assumed they were suggesting PWM will cause an inherently slower spinning fan to spin at any RPM regardless of model, which is actually a response some Noctua diehards have used in the past when I point out what Noctua is omitting when they advertise their fans as being so much quieter.
Regardless, I apologized for my bad assumption and subsequent response. It was out of line, especially given the actual meaning and intent of the comment.