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Discussion Starter · #1 ·
Hi everyone, I know that this probably sounds basic but I've never built a computer before and I'm going to try and attempt this. I have my A+ so I guess this will be good experience for me. My question is, in relation to the computer case fans that you install to keep the inside of the pc cool, which way do they fit? I got myself a couple of 80mm case fans and there's no label as to which way they secure to the case. Any assistance much appreciated. Thanks. Andrew
 

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Most fans may be used for intake or exhaust; a matter of only switching its orientation to reverse the airflow. As a minimum, you should have one fan (intake) mounted low on the front of the case and one (exhaust) mounted high on the back. Optionally, you may mount other fans in the side panels (intake or exhaust), bottom (intake) and top (exhaust). All of these are in addition to that in the power supply.
 

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One in front blowing "IN" and one in the rear blowing "OUT".
120MM fans move more air more efficiently and quietly if your case will accept them.
Fans mounted in other areas (top-side) can do more harm than good by causing turbulence that disrupts the airflow. Experimentation is the only way to determine that.
 

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Discussion Starter · #5 ·
Most fans may be used for intake or exhaust; a matter of only switching its orientation to reverse the airflow. As a minimum, you should have one fan (intake) mounted low on the front of the case and one (exhaust) mounted high on the back. Optionally, you may mount other fans in the side panels (intake or exhaust), bottom (intake) and top (exhaust). All of these are in addition to that in the power supply.

Hi gcavan:) Thanks for that information, that's a great help. Andrew
 

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Discussion Starter · #6 ·
One in front blowing "IN" and one in the rear blowing "OUT".
120MM fans move more air more efficiently and quietly if your case will accept them.
Fans mounted in other areas (top-side) can do more harm than good by causing turbulence that disrupts the airflow. Experimentation is the only way to determine that.

Hi Tyree, many thanks for that information, that's great. Andrew
 
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