fan installation

[vietboi]

when installing a fan on a case..which direction to i install the fan? do i install it so that the fan sucks the hot air from inside the computer out or di i install it so it'll suck the cool air from outside into the case?

aslo, i bought a computer case and it came with an 500watts psu, the brand of the psu is unknown, but i think it was made by the company i bought the case from ,www.cmicomputer.com. should i keep the power supply or go buy a brandname psu?

A good rule of thumb . . .

Fans on the front are intake (suck air in)

Fans on the top/back are exhaust (blow air out)

Fans on the sides can be either intake or exhaust, depending on what you need to equal the air pressure.

[amdkt7]

It depends on where the fan is installed and what other fans are in the case. Generaly the intake fans go at the bottom, exhaust at the top/back. Heat rises, so you want to not fight the natural air flow.

[vietboi]

thank ya'll for the advice..it make a lot of sense..