Case Fan Configuration

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tezcalitpoka

tezcalitpoka

Prominent
May 8, 2017
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Hello,

I have below fan Configuration but i think its creating negative air pressure but im not sure.
i would like to ask you guys if this configuration is ok to use or i need to do some changes, any recommendation?

2x140 front (intake)
2x120 top (exhaust)
1x140 back (exhaust)
+cpu fan 1x140 (pushing back)

See image:

 
Solution
C

3 exhaust fans vs 2 intake. You have negative air pressure. Put in an extra intake and remove an exhaust. If you want a scientific measurement about how much airflow there is in and out go the manufacturers website and find the airflow each fan has.
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Neur0nauT

Neur0nauT

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Dec 1, 2014
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I would test taking one of the 140's away from the front intake. (preferably the topmost one) This way, the intake will flow along the bottom of the case and then circulate round to the exhaust at the back and top. It sounds like there might be too much airflow intake which is not getting a chance to circulate at all, and blowing out straight away IMO.
 
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faalin

faalin

Illustrious
Feb 22, 2012
6,039
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Front and side (if you have side) are intake
top and rear exhaust

Tower cpu coolers should pull from the front of the case and push to the back



There is my case
2 120mm in front for intake
2 140mm on top for exhaust
1 120mm in rear exhaust

no temp issues.
 
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tezcalitpoka

tezcalitpoka

Prominent
May 8, 2017
10
0
510

Do you think i have more intake than exhaust?


i have cooler master pro 5 case no side)

What if i switch top and front fans (right now front fans are 140' top 120')

Or

im out of cpu slots on mobo, maybe i can get this SilverStone PWM Fan Hub System and add 1 more 140 in front of the case?
 
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C

chalky16

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Jan 4, 2016
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You're temperatures will be fine with all those fans. It's the amount of dust that comes in is the drawback of negative air pressure. As long as you have more intake than exhaust and filters on your fans there won't be a whole lot of dust.
 
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tezcalitpoka

tezcalitpoka

Prominent
May 8, 2017
10
0
510
im not sure i have more intake or exhaust with below configuration. (it seems i have more exhaust)

Fan sizes are different, its confusing

2x140 front (intake)
2x120 top (exhaust)
1x140 back (exhaust)
+cpu fan 1x140 (pushing back)
 
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C

chalky16

Reputable
Jan 4, 2016
375
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4,860

3 exhaust fans vs 2 intake. You have negative air pressure. Put in an extra intake and remove an exhaust. If you want a scientific measurement about how much airflow there is in and out go the manufacturers website and find the airflow each fan has.
 
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