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120mm Fan Location

G

Golem

n00b
Joined
Feb 8, 2004
Messages
7
Hey everyone, I`m just about done building my new system, and well I ordered four 80mm Panaflos, one 92mm Panaflo, and a 120mm Panaflo....This is where it gets interesting. I got the package yesterday, in fact I came home early from school just to make sure I could sign for the package. And I open up the box, and I find a huge ass honka tonka 4.5 inches in diameter beastial FAN!!:eek: I had NO IDEA 120mm fans were this big! I know 10mm equals a cm, and 3.5cm is ABOUT an inch...but it just never processed in my head. Anyways, so now I have this huge fan and no where to put it. Well not exactly, this is where you guys (the experts) come in. I was wondering if I should drill a hole on the top of my case (blow hole) and mount it there, or if I should mount it on my window. And which direction should the flow be if I mount it on the window.... Thx for any help.
-Jeremy
 
I mounted my 120 in the bottom front of the case as an input - moves a lot of air and doesn't make much noise. and yah - 120s are big, and a CD is a great template for cutting a hole.

My case had NO front fan mounts what-so-ever, so I made my own...
120_1.jpg

120_2.jpg


Not the prettiest, but airflow is good (yah, I need to clean the dust off the front, inside is cleaned out regularly, like I said I'm lazy 'cause with this Inwin case you pretty much have to take the thing apart to get the front bezel off.

Peace,
Tim
 
you can put it anywhere you want. you'd prolly get lower temps by positioning it so that the center of the fan is in between the AGP slot and cpu. so the fins are over those 2 area's

whatever you end up doing, make sure you have the same CFM of air moving into the case as going out of the case.
 
Ok, yeah I wasn't sure if I wanted negative pressure, positive, or neutral, I`ve heard about every excuse as to why one is better than the other, but neutral it seems would make for the most efficient air flow...thx for the tips
 
Originally posted by Golem
Ok, yeah I wasn't sure if I wanted negative pressure, positive, or neutral, I`ve heard about every excuse as to why one is better than the other, but neutral it seems would make for the most efficient air flow...thx for the tips
Click to expand...

In "theory" - positive pressure is the way to go. Having more intake CFM than Exhause CFM tends to help keep the fine dust from getting in. Mainly because it's tough to totally seal up a case. A balanced in / out would be the most effiecent - but who knows what the CFM of that power supply fan is (unless you replace it like I did... :) ).

Peace,
Tim
 
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