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Case fan help!!

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  • Cases
  • Fan
  • ATX
  • Components
Last response: in Components
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September 26, 2013 8:14:58 AM

my cousin bought this slim atx/itx case that has 4 fan slots, 2 on the top and 2 on the bottom. giving her 3 of my extra 80mm fans, i was wondering, should the fans at the top part have air blowing towards or away from the hsf ? and what about the bottom fan ?

More about : case fan

September 26, 2013 8:19:40 AM

One exhaust at each end, and one intake at each end, best cooling solution, hope this helps, also remember to pick the best answer when done so that others may learn from this thread.
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September 26, 2013 8:20:21 AM

heat rises, You want to create a wind tunnel, So all fans blowing up. Bottom fans should be pull(inside the case sucking air from the bottom) while the top fans should be push(inside the case pushing air out the top) --[->---->]--->
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September 26, 2013 8:22:02 AM

let the top fans suck in air and use the bottom fan and the rear fan as exhaust
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September 26, 2013 8:26:03 AM

gonna try the solutions first before picking the best answer .
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September 26, 2013 8:27:47 AM

Um...both of you are wrong,

1st off he does not have a rear fan exhaust.
2nd how would a whirlwind effect help when you have components that block airflow in a mini-itx case.

You want an in and an out at each end so the air that does get trapped in there has somewhere to go at each end, also you want those same components to be cooled.
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September 26, 2013 8:28:20 AM

siddharthmukul007 said:
let the top fans suck in air and use the bottom fan and the rear fan as exhaust


This is exactly what you shouldn't do, heat rises.
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September 26, 2013 8:30:59 AM

ddbtkd456 said:
Um...both of you are wrong,

1st off he does not have a rear fan exhaust.
2nd how would a whirlwind effect help when you have components that block airflow in a mini-itx case.

You want an in and an out at each end so the air that does get trapped in there has somewhere to go at each end, also you want those same components to be cooled.


the case doesn't have a rear exhaust, only top and bottom,
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September 26, 2013 8:32:31 AM

matt_133 said:
ddbtkd456 said:
Um...both of you are wrong,

1st off he does not have a rear fan exhaust.
2nd how would a whirlwind effect help when you have components that block airflow in a mini-itx case.

You want an in and an out at each end so the air that does get trapped in there has somewhere to go at each end, also you want those same components to be cooled.


the case doesn't have a rear exhaust, only top and bottom,


I know thats why i told them that, you want one at each end so that way all the air has air coming in and out all the time.
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September 26, 2013 8:36:53 AM

ddbtkd456 said:
matt_133 said:
ddbtkd456 said:
Um...both of you are wrong,

1st off he does not have a rear fan exhaust.
2nd how would a whirlwind effect help when you have components that block airflow in a mini-itx case.

You want an in and an out at each end so the air that does get trapped in there has somewhere to go at each end, also you want those same components to be cooled.


the case doesn't have a rear exhaust, only top and bottom,


I know thats why i told them that, you want one at each end so that way all the air has air coming in and out all the time.


kinda like this ?
-[>---->]--
-[<----<]--

or like this ?
-[>--<]-

or this ?
-[<--->]--
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September 26, 2013 8:41:13 AM

@burdenbound

i always though that hot air can only rise when air is static,during a free flow condition air goes wherever you push it.

i just suggested a top to bottom approach so that fresh air gets sucked in from the top and cools off the processor first before even it becomes hot.
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Best solution

September 26, 2013 8:41:13 AM

matt_133 said:
ddbtkd456 said:
matt_133 said:
ddbtkd456 said:
Um...both of you are wrong,

1st off he does not have a rear fan exhaust.
2nd how would a whirlwind effect help when you have components that block airflow in a mini-itx case.

You want an in and an out at each end so the air that does get trapped in there has somewhere to go at each end, also you want those same components to be cooled.


the case doesn't have a rear exhaust, only top and bottom,


I know thats why i told them that, you want one at each end so that way all the air has air coming in and out all the time.


kinda like this ?
-[>---->]--
-[<----<]--

or like this ?
-[>--<]-
-[<--->]--


more like this:

-[>----->]-
-[<-----<]-
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September 26, 2013 8:48:43 AM

i tried placing them all as exhaust, then played for a while, i noticed the case get warmer (because it's like sheet metal), then i tried WarWolverineWarrior's solution, noticed it get cooler, but i can still feel it warm, then tried
ddbtkd456's solution, worked like a charm. No warm air coming from all 3 fans, and the case isn't that warm anymore, thanks ddbtkd456!
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September 26, 2013 8:50:31 AM

matt_133 said:
i tried placing them all as exhaust, then played for a while, i noticed the case get warmer (because it's like sheet metal), then i tried WarWolverineWarrior's solution, noticed it get cooler, but i can still feel it warm, then tried
ddbtkd456's solution, worked like a charm. No warm air coming from all 3 fans, and the case isn't that warm anymore, thanks ddbtkd456!


Your welcome, please feel free to contact me with any future questions or concerns directly via pm.
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September 26, 2013 8:52:47 AM

matt_133 said:
i tried placing them all as exhaust, then played for a while, i noticed the case get warmer (because it's like sheet metal), then i tried WarWolverineWarrior's solution, noticed it get cooler, but i can still feel it warm, then tried
ddbtkd456's solution, worked like a charm. No warm air coming from all 3 fans, and the case isn't that warm anymore, thanks ddbtkd456!


Your welcome, please feel free to contact me with any future questions or concerns directly via pm.
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September 26, 2013 7:05:33 PM

That's interesting that
-[>----->]-
-[<-----<]-

works.

Good Job
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September 26, 2013 9:05:28 PM

WarWolverineWarrior said:
That's interesting that
-[>----->]-
-[<-----<]-

works.

Good Job


It normally wouldn't but being that mini-itx cases are so thin and narrow you must have a exhaust and an intake on each end so that where one set fails the others can make up for.
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