Air out or In ?

[whills303]

Given a well sealed case, would it be better to exhaust the inside air out of the case OR bring air in with the case fans? My latest P4 system is being built in a full size female mannequin as a Borg from Startrek. My thoughts are to use 2 80mm fans in the torso and 1 120 in the base. 2 80s in and the 120 out or 2 80s out and the 120 pushing air in or ???
JohnH

 

[Hallow]

I have 80mm intakes on both the side and front and a 120mm exhaust on the back. I have experimented with all different combinations of the three...what is that? Nine different combinations? Yep...I tried them all and that end configuration provided the best results. In all honesty, there was only a 1-2 degree difference between all of the combinations.

 

[whills303]

I have 80mm intakes on both the side and front and a 120mm exhaust on the back. I have experimented with all different combinations of the three...what is that? Nine different combinations? Yep...I tried them all and that end configuration provided the best results. In all honesty, there was only a 1-2 degree difference between all of the combinations.

Pretty much what I have figured out in the last few days testing with a fog machine. More IN than OUT. Interesting to see the results with a Toys R Us fog machine $5USD clearance.
JohnH

 

[wee96]

Ive always stuck with keeping roughly the same amount in as out, where ive got one 80mm on my side sucking in, and an 80 behind the cpu pushing out. If you pull out or suck in more than you can get back out/in, it throws the flow off and can raise temps suprisingly higher.