does the chasis fan blows air...

April 18, 2010 at 21:38:57
Specs: Windows 7 64bit, Phenom II 3.20/ 6 G
guys, I just installed one of those 180 chasis fans that goes on the side, but I'm kind of confuse if it suppose to blow air in or out of the box


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April 19, 2010 at 00:35:49
A front or side fan should blow into the case. Side mounted fans though are usually not a good idea...they can disrupt airflow thru the case.

For most towers, the psu fan is enough. The next step would be to mount a fan just under the psu to exhaust (blow out) warm air.

Air rises as it warms up; nothing you or I can do about that. So, the idea is ambient air goes in the lower front and warm air exhausts at the top rear. That airflow washes over the components inside the case, picks up the heat generated by those components, and spews it out into the room.


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April 19, 2010 at 03:20:47
Just to add to Skipcox's comment about hot air rising, it also expands. So a greater volume of air needs to be extracted than is going into the case. So for this reason any extra fans should be on the rear of the case extracting hot air. Pushing in more cool air is pointless if the hot air cant get out. Extracting air out of the side of the case is useless as it has not had chance to remove the hot air from around the CPU.


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April 19, 2010 at 11:13:24
thanks to both of you guys... I guess an 80 mm smaller fan at the back of the case (extracting air) will do it.

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