Please Explain benefits of Positive Airflow

[lazerin]

Hi,
I have negative airflow in my case. With this setup, i believe that air is being sucked out at a rapid rate, so no hot air can stay long enough to heat things up.

I do not understand y positive airflow is good. Can someone please explain?

[Arkaine23]

When the pressure is high in the case, it is more difficult for dust to be pumped in. When pressure is low, dust has a harder time getting in(it still does). Intake fans provide more cfm when they don't have to fight against high pressure, so having more exhaust than intake is generally a bit better for cooling puposes.

I also have negative case pressure.

[lazerin]

.:bump:.