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Air flow control

post #1 of 3
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Hello. i have a question.. my rig set up for an all pull design.. i have x2 80mm fans on the front bottom(pull), one 80mm top fan(pull), 120mm CPU fan(pull) and and 120MM exhaust(pull).

My rig has a few extra hole or gaps that are concerning me. on my side panel i now have an open hole, having to remove my CPU panel assembly to make room for my hyper 212+, also. im missing a few PCI slot guards.. now to the question.

If i manage to "plug" these gaps in the case. you would your guess better air flow?

In my mind i think temperatues would be lower considering the presure inside the case would be higher. any ideas?
Edited by Jaxis - 1/7/12 at 5:10am
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Blue Steel
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post #2 of 3

Pull fans usually mean fans that draw air out of a case. Exhaust fans, IOW. It sounds like you have push fans -- intake fans.

 

In any case, 80mm fans are poor performers. The quiet ones push no air. The ones that push air are loud. You should use them only when you have no other choice.

 

If you have no choice on fans, then change the playing field. In 2012 you should not be trying to use a case that requires 80mm fans. The smallest fans you should consider are 120mm fans, but the wider the better for case fans.

 

That means a new case. Lucky for you excellent cases are available cheaply, most everywhere. Look at my sig for a link to what you should consider in buying a good case for air cooling.

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post #3 of 3
I would not condemn all 80mm fans as some work fine without a lot of noise. If the OP has been happy I would not change fans unless he actually needs more cooling.

As has been posted many times before each PC case and hardware is different. The general cooling scheme designed for the ATX style PC case is: cool air in the front and hot air out the top back. The reason for this is because warm air rises so it's natural to remove it from the back/top section of the case and allow cool heavier air in the front.

How many fans you chose to have pulling cool air in or blowing hot air out is up to you. The only means to see what works best for a particular PC case and hardware is to test and see what temps you get. While 140/120mm fans do work best for increased air flow with lower noise they are not a requirement for most situations.

Don't get caught up in the pissfests on negative vs. positive PC case pressure as it means little to nothing. Airflow determines cooling performance not air pressure differential in the case. Just test and see what works best for your PC and enjoy.
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