Arrangement of 3 80mm fans.

L

Levone

New Member
Ok so I have 3 80mm fans. I was wondering how I should arrange them?


I can't find an online picture of the case I have so I'll have to describe the set up. Essentially it'll be just two fans right above each other blowing in from the back and above that is just one blowing in from the side.

Now, the question is: should I have them all blow into the case? I was thinking of doing the bottom two as blowing in and the fan on the side blowing out (since heat rises) but then thought perhaps I should put exhaust fan nearer the video card so it could immediately get rid of the hot air and then the air from the two higher fans will 'fall' to the bottom and cool it down. Problem with that is that air may just get sucked out through the exhaust fan.

Soooo...I come to ya'll, whom are probably way more experienced in this kind of thing than I am. What should I do? Just leave them all blowing in or have two blowing in and one out or what?
 
It's pretty much standard to have your rear case fans exhausting the warm air, and have your side fan acting as an intake fan to cool the CPU heatsink or video card.

I'd leave your side fan intaking cool air, and have your rear 2 fans exhausting warm air.
 
Computer_Freak said:
+1 ^^^

The Standard Layout is Front intake, Rear exhaust, top exhaust, side intake...

thats usually how it is
Click to expand...

I would agree with that especially as hot air rises, also make sure the tower is not too close to the wall!! - it's an easy oversight as people nearly always try to make more space in their rooms by tucking everything away.
 
well, if the side with the mobo is on the wall, thats not too bad... cause there are no vents

just thats side will be a little hotter than usual.

as long as you dont cover any grills, or intakes you good.,..
 
Unfortunately this isn't the best built case and I only have the back and side fans. No front or top fans.

If I had something that could cut metal I could probably make a top fan slot easily, but I'm SOL on the front fan bit.
 
Done. It did change my temperatures by a degree or two.

Used to idle at 43 C, now idles around 39 - 40 C. Load hits 50 C whereas previous load hit 53-54 C. Not sure if it's done anything for my video card as I recently changed cards but don't have anyway to monitor its temperature while playing anyhow.
 
If you want to drop you CPU temps *Exclusivly*, take that funnel thats included with the case, and attach it it to the fan.

Then cold air blows Directly and only on the CPU...

But that restricts airflow (funnily enough for me it gives better results???)
 
there are a few ways you could have it, and obviously some more effective than others.

you could put a couple of fans on the front of your case and one at the back, or the otherway round. This would create a massive air current pulling cold air through the front and chucking the warm air out of the back.

Put one on the top of your case, because hot air rises so it will chuck it out, and 2 on the side, one aiming at the CPU one at another compnent, probably GPU unless you already have adequate cooling on it

You could act really clever and do a little mod to your case:

Somehow, there are several ways, get 2 fans, both sucking inwards, one up, one down next to each other so they are sucking air to the same point, inside your computer roughly in the centre. This will, beacuse of what it does to airflow, create low pressure inside your case. This means that every single hole that is on your case will be sucking in cool air, no matter how small the hole, so you will always have coll air coming in everywhere.


Just play around with em on the different mounting possitions and see which gives the best temperatures.

Also, aswell as possitioning speed can cause a drastic difference, being able to drop compnent temperatures by as much as 8-12 Degrees C :eek:

To control the speed google speedfan and download it and install. It's very easy to use, just open it up and change the speeds on the readings tab, and remember not always is all fans going full blast the best option, it can create dead spots of still air, if you get them around your CPU, RAM or GPU, especially if overclocking, you are looking at hefty damage to your hardware because of heat getting excessive
 
Levone said:
Unfortunately this isn't the best built case and I only have the back and side fans. No front or top fans.

If I had something that could cut metal I could probably make a top fan slot easily, but I'm SOL on the front fan bit.
Click to expand...

a pare of sheet metal snips cost about 20 bucks for a good pare but you can probably get a cheap pare for over 10 dollars and they cut through case like a hot knife in butter
 
Aastii said:
there are a few ways you could have it, and obviously some more effective than others.

you could put a couple of fans on the front of your case and one at the back, or the otherway round. This would create a massive air current pulling cold air through the front and chucking the warm air out of the back.

Put one on the top of your case, because hot air rises so it will chuck it out, and 2 on the side, one aiming at the CPU one at another compnent, probably GPU unless you already have adequate cooling on it

You could act really clever and do a little mod to your case:

Somehow, there are several ways, get 2 fans, both sucking inwards, one up, one down next to each other so they are sucking air to the same point, inside your computer roughly in the centre. This will, beacuse of what it does to airflow, create low pressure inside your case. This means that every single hole that is on your case will be sucking in cool air, no matter how small the hole, so you will always have coll air coming in everywhere.


Just play around with em on the different mounting possitions and see which gives the best temperatures.

Also, aswell as possitioning speed can cause a drastic difference, being able to drop compnent temperatures by as much as 8-12 Degrees C :eek:

To control the speed google speedfan and download it and install. It's very easy to use, just open it up and change the speeds on the readings tab, and remember not always is all fans going full blast the best option, it can create dead spots of still air, if you get them around your CPU, RAM or GPU, especially if overclocking, you are looking at hefty damage to your hardware because of heat getting excessive
Click to expand...

Thats Actually a good Idea.

Create mini Low Pressure Zones, (Works like a vacuum). Then, in order for those little LP zones to get back to nrmal atmospheric pressure, they will try suck in air, reapeating the precess, technically getting you optimal flow.

But you need higher RPM fans, and fans that move more air for that to work...

So it might have that affect, even though its very small.

But As I say, the best way is Side intake, Front intake (They Lower Down, so the air wont rise untill its heated)

Rear and top exhaust. They are higher up, and exhaust heat that has risen. If you put these as intake. They will mix the hot air, making them innafective
 
just remember that hot air rises and cold air falls so when pulling hot air out of the case the fan should be as close to the top of the case as possible. Remember also though that the psu has a fan and is exausting hot air also. Pull cold air in from the bottom of the case and push hot air out at the top of the case.
 
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