Need Help Understanding +/- Air Pressure


This is the after pic,I decided to cleanup my pc and attempt to do some cable management for selfish reasons,but also to help improve airflow.
I really could use a hand with this,as in I only have 1 gd arm, I mention this only to combat the wtflol that i expect from 99% of internet comments.

3 Fans total counting one on hyper 212 evo,one mounted in back and one up top( 2 on gpu and 1 on psu both blowing downwards). I'm posting here because i'd love to read up on positive/neg air pressure, and id love to hear which configuration i should go with. Im waiting on thermal paste to show up tomorrow before i attempt to mount the cm hyper 212 horizontally,with the fan blowing upwards? Love to hear what yall think i should do....
I'm trying to find the before pic to post as well because there is a really awesome story behind this pc. Thanks in Advance

This video from Linus explains the diffrence if that's what you want to know

Having more fans blowing into the machine will result in positive air pressure. If the intakes are fillteres, it will help preventing dust build up.
Linus made a video explaining the difference. commom setup is 2 intake, 1 out with the PSU seperate.

look in the comments before you say something as I already posted exactly the same video :P
it isn't a problem though

might not have been his fault he could've been typing before you posted

Thanks a lot fellas, This definitely scratches the surface, but how could i apply this to my current situation? top and back intake with hyper 212 fan blowing up and hopefully out? or back blowing out and top and hyper 212 intake? Currently limited to these 3 fans but i will add 1 more very soon. Thank you again for responding and taking the time.

Removed it, salvation saved?

Well kind of a late reaction sorry :P but the cpu fan doesn't really count the best thing you could do is a back outtake (cpu cooler blowing in same direction) and then a front intake

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