I am not a tech person, but I cleaned out my secondhand PC today, and it took hours with the sheer amount of dust accumulation. The fans were nearly overloaded with it!!
Does a clean PC run better / faster than one filled with dust? Or is it more a matter of keeping the fans running easily? Or something else…? Idk, maybe I imagined it, but it seemed to boot much faster after cleaning. Could be wishful thinking!
I have one computer that I can tell is dirty because the CPU and video fans run at max all the time, and the machine slows down (I’m sure it self-throttlws, I have the bios configured to be sensitive to heat).
Clean it and it’s quiet as can be, runs fine.