casing back fan - should suck air to casing or not?

[access denied]

i install a back fan for my casing. but which position giving good performance to computer?

the fan should suck fresh air into casing or suck out air from casin?

 

[Vybuni]

Depends on the overall direction of the flow of air in your case. If the flow is from front to back, then you want the fan removing the air. Conversely, if the air goes from back to front, then you want to suck the air in from the back.

 

[Trotter]

Airflow should run front to back, bottom to top.

 

[access denied]

but i dont have any fan at front...

 

[PZEROFGH]

Well if your CPU is like the zalman one i would say to make it back to front, i have it back to front only because i messed up with the screws . IF its just a regulat stock heatsink i would put the back fan as exahust to get rid of the hot air.

 

[access denied]

thanks for everyone replies, i have install a front fan now, front air suck in air , back fan suck out air...

temperature really going down now !

 

[Sh0r_ty]

nice
what type of fans are u useing? are they loud?

 

[doodle dee]

rear fans are usually always meant to exhaust air out the case.....

 

[Sprooty]

i dont understand how people put fans at the front when most cases have a front panel.

 

[crossphyr]

you still get some airflow to push hot air out anyway.. so even though you are not exactly sucking in that cool of air it still pushes the hot air to the exhaust.

always front to back and I dont know many people that have a fan on bottom.. but top fan for exhaust blowhole etc.