[SOLVED] positive or negative air pressure how should i set up my pc's airflow?

[eziowar]

hi, my cpu i5-4670k, gpu - zotac 1050ti mini, mobo- gigabyte z87x-ud3h, bios version F10b, psu corsair cs650m , ram 4x4gb @1600 mhz, windows10, cabinet cooler master haf 912, cpu cooler-Hyper 212X

i'm planing to replace my gpu with gigabyte raedon rx 5600xt gaming oc. currently i have 1 120mm intake fan up front and 1 120mm exhaust fan top back of the cabinet. also my psu has a intake fan bottom of the cabinet. u can see inside my pc -

https://imgur.com/ecaLPi4

View: https://i.imgur.com/ecaLPi4.jpg

in this set up i have negative pressure for some reason. please help me out installing 1 or more fans . now top of my cabinate can have 1 200mm fan or 2x120mm fans. my side panel can have 1 120mm or 1 140mm fan which is directly over my gpu. now i will surely add another 120mm front intake fan. i have few questions here -

1. should i go for slightly positive pressure for low dust? or negetive pressure is too good than positive pressure for keeping temperature low that i should not think about dust build up? i cleane up my own pc,
2. whatever pressure u think good for my set up, according to that how many and which type side and top fans should i use? though my top and side of chasis have no air filter , so till now i was blocking every hole of fan mounting spot on top and side of my chasis so that dust dont come in . is it better to just keep my chasis's top fan mounting spot like that way without installing top exhaust fan to prevent dust come in cause when my pc will b turned off and no fans gonna run then i think so much dust gonna come in through top if i install top exhaust fan.
3. at last, how frequently should i clean up?

every input of your is so valuable for me, plz help me out

 

[Phaaze88]

You don't have enough fans running in your chassis for positive/negative pressure to even be a concern.
Fill most of those slots up, and then you can ask about that.

The whole positive/negative dust thing is overblown though:

View: https://www.youtube.com/watch?v=dLX54ounENY


Just clean out the PC a few times or more every year.

 

[SkyNetRising]

please help me out installing 1 or more fans . now top of my cabinate can have 1 200mm fan or 2x120mm fans. my side panel can have 1 120mm or 1 140mm fan which is directly over my gpu. now i will surely add another 120mm front intake fan. i have few questions here

Either add one 120mm fan in front or
replace front 120mm with 200mm fan.

Clean once or twice per year.