Air Pressure

[kingsleyt]

Is it optimum to get all the coolers to be "intakes" for a mid-end gaming rig ?

Since it prevents more dust comparatively with it being more pressure inside.

And if so , would the temperature would be better ?

[Enderman]

you just need more intakes than exhaust, usually by one or two fans.

front and bottom should be intake, rear and top should be exhaust.

[Archangel1994]

[MegaDave91]

If by coolers you mean fans, no, you want to have at least one exhaust. Optimally, you want more intake than exhaust as this creates positive pressure.

[mythicalbeast]

No no no no. As I assume you are talking about rads in "coolers" you will have them as outtakes. I will explain like this. As Linus so very well explained in his video, you want a slightly possitive airpressure. So if you have 3 outtakes you want 4 inntakes, 2 outtakes 3 intakes, you get the idea. Those outtakes should be your rad.

 

You are talking about dust, well your radiator is not a fan filter. Filter your inntakes son! Filter everything. This keeps dust out of you coolers. If you use your rad as a intake you will either have to filter it, causing it to be a lot less efficient, or you will have it filled with dust also causing it to be less efficient. If you have filtered inttakes and your rad as a outtake it will be clean as a wistle. 

 

But wait, there's more! When you use your rad as a intake you will fill your PC with hot air, making every other component warmer (also, that actually increeses the airpressure inside your case). And your GPU is what really needs that cold air, it is presumably aircooled, and it also outputs a lot more heat. Therefore having a 60 degree card, and 50 degree CPU is a lot better than a 90 degree card, and 30 degree CPU. 

[kingsleyt]

Awww sweet , I watched the video too before and in short 
Slightly higher air pressure in case = more intakes than output 
Filter my intakes to prevent dust 

[MegaDave91]

Awww sweet , I watched the video too before and in short 

Slightly higher air pressure in case = more intakes than output 

Filter my intakes to prevent dust 

ALWAYS filter your intake fan(s)--this is very important no matter how positive the pressure is. The chain is only as strong as its weakest link, so to speak.

[ThomasD]

Positive pressure ONLY reduces dust if your intakes are filtered.

 

Otherwise you will get best temperatures by maximizing exhaust flows at the top and rear of the system, even if that means negative pressure within the chassis.

 

You'll  just have to de-dust more often.