Airflow

g4m3rof1337

g4m3rof1337

Active Member
So my case, CM Stacker, has a vent on the bottom and two slots for another PSU, but you can mount two 80mm fans there. I am wondering which method I should do. The bottom part of my case, by my GPU and stuff, has no airflow. Its below the front intake, and below the side intake. So, would it be practical to mount a 120mm intake fan on the bottom, taking air in by the GPU.


Bottom Vent.
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Back Vent.
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If the fan were to go on the bottom vent, this would be the view.
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If you could somehow mount a fan on the floor of the case to suck air up into that bottom space, that's what I would do. Assuming you could open it up enough to get airflow (probly means removing that floor grating). Then I would add exhaust fans to the rear.

I hate putting an intake fan in the back. It's best to make the air all flow in the front, and out the bottom (and preferably top, if possible). I'm going through air flow madness right now, too. I swapped my Antec 900 for an NZXT Apollo (I'm so retarded), using the Antec in my girlfriend's new computer. I have now decided I really, really miss that 200mm top-mount fan the Antec has, even if I don't miss the Antec's awful cable management.

Long story short, I'm looking into having a Lian-Li full tower case made up for me, with a top-mount window blowhole cut, and holes to mount three 120mm fans drilled.
 
I would put two 80mm fans at the back, and one, maybe two 120mm fans on the bottom, after all, hot air rises, so I think it'd work pretty well...
 
Why not just put the two 120s on the bottom? The more I think about it, the more I think having the 80s on the back there would just disrupt whatever the 120s were doing.

How elevated is the floor of the Stacker? Might have to jack it up a little to open up enough space down there.
 
Know what I find works good? A 120mm fan on top of the case sucking out the air upwards since heat rises.

You'd have to cut the hole on top of the case though for that obviously.
 
Thats the thing though, there already is a top exhaust, it has an 80mm.
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But there is no air flow near the GPU area.


Thanks.
 
How do you know that you don't have air flow near the GPU? I've tried putting the 2x80mm fans in the 2nd PSU slot a while back and that didn't seem to change things much. Right now I have 2 120mm fans in the front (2 hdd cages) and everything seems fine. You could also mount a fan or two at the bottom vent or try the crossflow fan if you have some extra money.
 
Well, Ive looked inside my case when the side panel was on, and noticed my GPU was below the side panel intake, like the bottom of the 80mm side intake ends where the GPU is so the GPU fan is below the fan. And the GPU is below the front intake.
 
what you should do is create a mini air duct!
have some ducting (or whatever its called) going from the VGA fan to an 80?(forgot what size you could fit on the back)mm right out the back. it would look cool, i think, and rid your case of any disturbance in the current airflow that you would get with adding a bunch of other fans that are "free blowing", as well as the extra heat produced from the VGA,pushing it all right out of the case.
just make the sure the fan you install is sucking the air OUT of the duct and not in*!
it is as well easy to make.
to help you see what im saying if you don't, it should look like a J from the side. that is, the ducting from the card to the case fan, should look like a J.

Anyone like my idea?
 
First of all, I wouldn't worry much unless your GPU temps are too high. Second, why is your front intake above the graphics card? Even if you have the fan (I'm assuming this is the hdd cage with 120 mm fan) in slots 4-6 (the bottom slot being 1) the air should be aimed right at the graphics card.
 
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