To achieve optimal airflow and less dust accumulation, it’s recommended to opt forneutral pressureorslightly leaning towards positive.
With more intake than exhaust fans (orjust balanced), dust won’t enter the case from every nook and cranny. Instead,hot air tries to escapefrom every gap, and theconstant air supplykeeps the components cool.
That doesn’t mean negative pressure is that terrible. Such a configuration isideal for users who have dust-free surroundings and whose components overheat excessively.
Let’s get deeper and discuss why a slightly positive pressure is better.
Why I Recommend Slightly Positive Pressure
For beginners, positive pressure is wheremore air comes in than goes outof the PC case. you may achieve this by installingmore intake fans than exhaust.
But we don’t want all or too much intake as it leads to difficulty in hot air dissipation. ensure youinstall an extra intake fanwhenever you go for one exhaust.
In an ideal setup, this means2 to 3 intakeand1 to 2 exhaust fans. This way, you’ll have a balanced airflow and air pressure slightly leaning toward positive.
In a setup with a balanced number of fans, running theintakes at a higher speedthan the exhausts should also do.
This configuration has the following benefits:
Maintains Proper Airflow
When thenumber of fansis balanced out, thesame amount of airthat’sbrought in from the front or bottomisexhausted from the rear or top.
It does look like that’s the best approach to go for. However, in real-life scenarios, thecomponents’ temperaturesrise unexpectedly and require extra effort to throw out hot air.
Aslightly negative air pressure(with an additional exhaust fan) is a good solution. But again, this creates more chances of dust accumulation in the nooks and crannies.
Going for a slightly positive pressuretraps extra air inside the caseand theairflow remains balanced.
