Case airflow

[Cita8]

Hi all,

I'm subscribed to the usual suspects on YouTube and they all still advocate the fans at the front bringing air into the case and fans at the back blowing the "hot air" out.

It just doesn't sit well with me and science basically.
Some great videos explaining why as well but I've forgoten them

The upshot is basically that to cool a device like a CPU/GPU, the best way to do it is to blow cool air on it.
The idea of "sucking air" into a case and "heat rises" is all well and good but it isn't really viable in modern PC cases with power hungey components.
Old fashioned setups (I built a Cyric PC) with the nondescript grey case with one fan at the back and the PSU fan giving motherboard cooling are still the argument for the suck in/blow out theory.

Tests by the likes of "experts" like Steve from GN still promote this idea.
There is no such thing as sucking air into a modern PC case as that would need a fully sealed case.

So, the best we can do is to blow cooler room air at the components and the case vents will deal with it.
This negative vs positive pressure stuff is for YouTube "influencers".

Please comment, but of course, this is only my opinion.
Cheers

 

[Cita8]

First thing is to differentiate between airflow and air-blow. Blowing air generally creates turbulence that reduces air-flow. We want cool air flowing into case, to components, through component coolers, to exhaust vents and out of case without the heated air coming out of components mixing with the cool airflow to them. Below is link to simpe guide to case airflow and how to optimize it, including how to monitor airlfow temp into coolers vs room.
https://forums.overclockers.co.uk/t...-i-put-my-temp-sensor.18564223/#post-26159770

Thanks