The fan is so quiet it’s hard to tell it’s working. The only clue is the warm air coming out the left side. It comes in handy on these cold winter days.
I usually use a cooler and when I do internal fan doesn’t seem to run at all because I can’t feel air pushing out the vent. In fact, what little air there is coming out is actually cold.
I don’t use the cooler because it “makes me feel good”. I use it because it reduces the internal temp of the laptop vs. just the internal fan and that’s a good thing.
I have proven this using hard drive monitoring software that showed between 6 and 10 degrees of temp drop when using the cooler.