Intake or Exhause Fan?

Marooner5

Honorable
Jul 22, 2013
2
0
10,510
Hey guys, I have a small question here. I have a Cooler Master HAF 932 Advanced and am wondering on what I should do in terms of fan efficiency. The only spot I can place this case is beside my desk on the floor (it is too large to fit under the desk I have, which is a decently sized corner desk) with the rear up against my wall. My question is should I have the rear fan bring cold air in (I have a fan under my desk that is usually on, because I like having a constant background noise, that I can easily point it towards my case so that the rear fan will definitely be bringing in cold air) or should I have it as exhaust?

My thoughts were that the top exhaust fan is definitely capable of pulling all that hot air out, especially if I point my cpu cooler up with it. The only thing is I've read that having too big of a difference in the ratio of intake to exhaust fans causes weird air pressure inside the case. Also, I'm not sure what having two fans on the opposite case both being intakes will do. If I do point the rear fan in I will have three intakes and one exhaust. If necessary I can always get an extra fan to go on top as there is room for two. Lastly, my room is quite cold as it is in the basement and so the walls and floor are always cool.

If you need more info just let me know.

Thank you!
 
Solution
http://www.ibuypower.com/dual-radiators/images/airflow-2.jpg

http://cdn.overclock.net/c/ca/cab5a64e_d7cb5b1c_computer02b.png

two different airflow options that I like.

Side fans if you have any will be intake.

edit: If the rear exhaust is blocked in by a wall and the bottom also sitting on the floor, I'd just use the front and sides as intake and the top as exhaust. If you have a directional hsf, make sure to point it so that the air is going towards the exhaust.
If I were to experiment with that though, I wouldn't see anything wrong with point the traditional rear exhaust inwards if I had two fans pulling the exhaust through the top. As long as temps are fine ideally there should be no issues.
I'd leave it as an exhaust, and point your CPU cooler in its direction.
That case has LOTs of air inflow with the big fans in front and side, and your components should stay nicely cooled. That 140mm fan will help pull the cpu heat out of the case.
 

biopolar

Honorable
Mar 7, 2013
157
0
10,710
http://www.ibuypower.com/dual-radiators/images/airflow-2.jpg

http://cdn.overclock.net/c/ca/cab5a64e_d7cb5b1c_computer02b.png

two different airflow options that I like.

Side fans if you have any will be intake.

edit: If the rear exhaust is blocked in by a wall and the bottom also sitting on the floor, I'd just use the front and sides as intake and the top as exhaust. If you have a directional hsf, make sure to point it so that the air is going towards the exhaust.
If I were to experiment with that though, I wouldn't see anything wrong with point the traditional rear exhaust inwards if I had two fans pulling the exhaust through the top. As long as temps are fine ideally there should be no issues.
 
Solution