Fan Placement Cooling

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armoosead

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Jan 25, 2013
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Hi thanks in advance. Ive read a bunch of articles on fan placement and I wanted to open it up to those with experience. Ive heard everything from 7 fans is the best, to one in the rear being the most efficient. Also which setup is better Front/Rear ,Top/Rear, Rear. Which setup have you found works the best for you? Please cite specifics, THanks! :)

BTW I am running a 4770k, GTX 760 and have EVO 212 on the CPU
 
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There is no one right answer.

It depends a lot on your case.
Some cases rely on positive air pressure. In these the intake fans surpass exhaust fans and most of the exhaust air is just poshed out by the pressure. Silverstone makes a lot of different positive pressure cases. Look at the TJ08-E, RV02-E and FT02 as examples.
Other cases rely mostly on exhaust fans. In these the intake air is sucked in because of low pressure created by the exhaust fans.
You then have fans mounted to blow air over a specific component, like the side fan on many cases to blow air on the video card.
A good case can keep components cooler, and this doesn't necessarily mean it has more fans or bigger fans.

If you are trying to keep the computer quiet, slow...
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Bezzell

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May 13, 2013
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I always follow two rules.

1. Heat rises.
2. Maintain positive pressure.

The idea behind positive pressure is that by having more intake fans than exhaust fans, air and dust are forced out of cracks and seams of the case, rather than being pulled in.

Most any modern case will allow for 2x intakes and 1x exhaust.

Another option if you have the same number of intakes as exhaust is to run the intake at a slightly higher RPM than the exhaust.
 
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VincentP

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Oct 18, 2013
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There is no one right answer.

It depends a lot on your case.
Some cases rely on positive air pressure. In these the intake fans surpass exhaust fans and most of the exhaust air is just poshed out by the pressure. Silverstone makes a lot of different positive pressure cases. Look at the TJ08-E, RV02-E and FT02 as examples.
Other cases rely mostly on exhaust fans. In these the intake air is sucked in because of low pressure created by the exhaust fans.
You then have fans mounted to blow air over a specific component, like the side fan on many cases to blow air on the video card.
A good case can keep components cooler, and this doesn't necessarily mean it has more fans or bigger fans.

If you are trying to keep the computer quiet, slow moving fans are best. This is often achieved by using large fans moving slowly to push the same air as a smaller fan.
Be wary of cases with lots of small fans. These may just push the air around the case and not have good airflow in and out of the case.
Be aware too that if the case has unfiltered intake vents, moving more air means collecting more dust.
 
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