this post was submitted on 14 Aug 2023
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They would likely perform worse. If ("if", ha) those fans are not in perfect sync, they're going to obstruct airflow. Also, consider that each fan introduces both audible noise and perturbations in the airflow which in turn, also will cause noise.
Incidentally, I have (almost) that very same case, an Antec P182. Mine has a super-quiet PSU fan, and a ginormous heat pipe cpu cooler (HR-1 if you're curious) with one fan ... and that is plenty.
But keep in mind that the sound of the cooling will be irrelevant once that user starts typing, as their mechanical keyboard will produce enough sound to not only drown out the fans, but also to shatter their eardrums
You say that as if that's a bad thing
MX Green Switches 4 life
BROWNS
Any that make that click feel...
I have browns & halo (way better than those cheap flat dell keyboards, but I feel both boring, dull. Suggestions welcome!), way way far from those old keyboards where you felt the click. It wasn't noisy without reason, or so I remember :-)
So in the end it might be better idea to go for “push” instead of “push/pull” solution?
Putting a fan after another will up pressure (doubling in theory), but not displace more air. Except if the air has to go through something slowing it down where more pressure will help to push more air through it.
There are obviously lots of variables at play (the extra fan takes up space too, reducing airflow for example) so you are surely right that it's probably useless or worse to have a "double fan" for a PC cooling system, but the fans being in perfect sync is just a noise problem (on small fans like this).