Push VS Pull to neutralize air pressure

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HeavenEdit

Commendable
Apr 28, 2016
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I'm currently planning my first build ever.
I want to get a neutral / mild positive air pressure in my Corsair Graphite 780T.

I will be using the Corsair H115i AIO

There are 2x 140mm fans in the front intake, 2x 140mm in the top (above the rad) and 1x 140mm rear exhaust I will be using.

I'm not sure whether I should configure the top fans in PUSH so that they blow hot air over the other components (positive air pressure) or PULL which would mean hot air exhausted out of the top (negative -||-)

This guy has been using a similar cooler in PUSH and it works for him: https://www.youtube.com/watch?v=L-QZXgqB3_c

So my final question... Push (positive air pressure) or pull (negative air pressure) and why?

Cheers

 
Solution
Quixit
Either push with the fans pushing down from the top or push with the fans mounted on the bottom of the radiator pushing up. You don't want to install a rad with just pull fans because the airflow pushing down on the fins is what cools the radiator.

Both of these options are good, but pushing the air into your case means the heat from the CPU is dumped into the case, but you're getting fresh air in the first place and the CPU will be cooler. Otherwise if you mount the fans so that pushing the air out of your case your case air temperature will be a bit lower, but you're cooling your CPU with air that's already heated inside the case. It really depends if you care more about CPU or case (and by extension GPU) temperatures.

Don't be too...
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Quixit

Quixit

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Dec 22, 2014
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Either push with the fans pushing down from the top or push with the fans mounted on the bottom of the radiator pushing up. You don't want to install a rad with just pull fans because the airflow pushing down on the fins is what cools the radiator.

Both of these options are good, but pushing the air into your case means the heat from the CPU is dumped into the case, but you're getting fresh air in the first place and the CPU will be cooler. Otherwise if you mount the fans so that pushing the air out of your case your case air temperature will be a bit lower, but you're cooling your CPU with air that's already heated inside the case. It really depends if you care more about CPU or case (and by extension GPU) temperatures.

Don't be too concerned with air pressure, computer cases aren't airtight and we don't use air compressors to cool them so air pressure isn't a big factor. Airflow is what you need to think about.
 
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Solution
H

HeavenEdit

Commendable
Apr 28, 2016
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1,510


Thank you! This was very helpful

 
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H

HeavenEdit

Commendable
Apr 28, 2016
14
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1,510


Lol. You don't cool your rads do ya

 
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noidea_77

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Jul 28, 2012
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Oh I do and I know how to do it effectively. Have fun with your fist build!
 
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H

HeavenEdit

Commendable
Apr 28, 2016
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Cheers bro. Should the top ones be intake or exhaust? What do you think?

 
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noidea_77

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Jul 28, 2012
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Always exhaust, as the picture on the Corsair page shows it. But then you don't need the front fans.
And totally different: rad at the back side http://www.overclock.net/t/831636/official-corsair-graphite-club-780t-760t-730t-600t-380t-230t/5780
 
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