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fans. In or out?

View Poll Results: Which way around do you install a case fan for the best cooling?
Blow air in 2 28.57%
Extract air out 5 71.43%
Voters: 7. You may not vote on this poll

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  #1  
Old 03-04-2004
TechSpot Evangelist
 
Location: Bridgend
Member since: Nov 2003, 2,371 posts
fans. In or out?

Just a quick question about configuration of case fans. And of course, the question, why?
  #2  
Old 03-04-2004
StormBringer's Avatar
TechSpot Evangelist
 
Location: USA
Member since: Apr 2002, 2,871 posts
in from front, out at back. It has been discussed here many times in the past.

You want air to flow through the case, since hot air rises, you position a fan or fans in the front near the bottom to pull air into the case, then position fans in the rear higher, blowing air out.
  #3  
Old 03-04-2004
TechSpot Evangelist
 
Location: Bridgend
Member since: Nov 2003, 2,371 posts
Oh, thanks. Am I to take it then that there's not much point just having the one sucking air out at the back?
  #4  
Old 03-04-2004
StormBringer's Avatar
TechSpot Evangelist
 
Location: USA
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if thats all you got, but I'd recommend you add one to the front pulling air in.
  #5  
Old 03-05-2004
Vehementi's Avatar
TechSpot Paladin
 
Location: Bellevue, WA
Member since: Feb 2002, 3,199 posts
System specs
For a 2nd opinion, yes, optimally your fans should be blowing air in in the front and out in the back, exactly what SB said.

I would also reccomend an intake fan if you only had one.

If you get more case fans in the future, be sure you're running at a balanced pressure with the air outside. Don't set 3 fans to intake and 1 for exhaust, but rather 2 for intake and 2 for exhaust. If they weren't balanced you would be either pushing too much air into the case or sucking too much out, which is horrible airflow. Always keep it balanced.
  #6  
Old 03-05-2004
Didou's Avatar
Bowtie extraordinair!
 
Location: Brussels, Belgium
Member since: Feb 2002, 5,895 posts
System specs
Actually, if only one fan is installed, it would be better for it to be an exhaust fan.

The exhaust fan will remove all the hot air lingering around the socket area, whereas with an intake fan alone, cool air will come at the bottom of your case & stay there. The hot air around the socket area will remain in place so the intake will only be dusting up the inside of your case.
  #7  
Old 03-08-2004
(=DoM=)'s Avatar
TechSpot Enthusiast
 
Location: Manchester, UK
Member since: Feb 2004, 242 posts
They should make cases out of some kind of material which lets air through its surface but doesnt let dust in, like some kind of mesh, that would almost eliminate the need for noisy fans.

Either that or make water coling a lot cheaper, im plannign on getting a water cooling kit in a few months, but im extremely scared about fitting it. 1 drop of water is all it takes to completey b0rk your entire system
  #8  
Old 03-08-2004
StormBringer's Avatar
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Location: USA
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The mesh idea has a single fatal flaw, it would become a dust magnet and as such would also be a huge shroud of static around your precious components.
  #9  
Old 03-08-2004
SubKamran's Avatar
TechSpot Enthusiast
 
Location: Minneapolis, MN
Member since: Dec 2003, 303 posts
I have 2 in the back and one on the side. Should the side one be pulling air in?

And, I want to be some more fans, should I buy 1 or 2 for the front?
  #10  
Old 03-09-2004
XtR-X's Avatar
TechSpot Maniac
 
Location: Orange County, CA
Member since: Jun 2003, 1,040 posts
Quote:
Originally posted by SubKamran
I have 2 in the back and one on the side. Should the side one be pulling air in?

And, I want to be some more fans, should I buy 1 or 2 for the front?
Side push air inside.
Front push air inside.
Rear push air outside.
Top push air outside.

It never hurts to have enough fans... buy all you can...
  #11  
Old 03-10-2004
Didou's Avatar
Bowtie extraordinair!
 
Location: Brussels, Belgium
Member since: Feb 2002, 5,895 posts
System specs
Quote:
Originally posted by XtR-X
Side push air inside.
Front push air inside.
Rear push air outside.
Top push air outside.

It never hurts to have enough fans... buy all you can...
The more fans you have, the harder it is to control the airflow.

A few well placed fans will do wonders without making too much noise.
  #12  
Old 03-18-2004
Hedgehog's Avatar
Newcomer, in training
 
Location: New Westminster BC , Canada
Member since: Jan 2004, 11 posts
That's weird..the case fans in my tower (one on top and on the side) suck air in the top...and out the side...lol
  #13  
Old 03-18-2004
Godataloss's Avatar
TechSpot Booster
 
Location: Lorain, Ohio
Member since: Oct 2003, 501 posts
From a ventillation standpoint, it will always be benificail to have a negitive pressure area inside the case as this will draw air into the case through the ventillation slots and out the exhausting fan. If you have fans blowing into the case at a faster rate than they exhaust it will create a positive pressure in the case and it will be harder for the hot air to escape. Rather than add a bunch of new fans, get a single large exhaust fan and add ventillation holes where you need them. This should also cut down on the dust inside the case as you will be sucking in less airborn particulates.
  #14  
Old 03-19-2004
XtR-X's Avatar
TechSpot Maniac
 
Location: Orange County, CA
Member since: Jun 2003, 1,040 posts
Quote:
Originally posted by Didou
The more fans you have, the harder it is to control the airflow.

A few well placed fans will do wonders without making too much noise.
But when controlled, the results are better. Never hurts.
Closed Thread

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