My case is a corsair 450d and i have the stock fan set up with 2 in the front as intake and one in the back as exhaust. Im want to get a couple degrees cooler than what im at now so i decided id add a. But im not sure where to put it i have the options of above the cpu all the way to the back of the above the cpu and ram more centered in the case or on the bottom of the case between my psu and hard drive. So where should i put it and should i have it be intake or exhaust? Thanks.
Where do my new fan on my case?
- Thread starter apow98
- Start date
It may not help - but it can't hurt to put in another fan. Essentially what you want is the same volume of air moving in as you have moving out with a preference (if needed) to have slightly more moving in than pulling out.
Anyway - since you have two fans pushing in - you want 2 fans pulling out. However you likely already have that with the one fan on the case and the fan on your PSU.
Now - based on your case design - I would suggest 2-140mm on top pulling out and 2 - 120 mm on the bottom pushing in. Also - be sure to put this case on a hard surface as you will not get good intake if placed on carpet, and put this up above the floor - as you will be sucking in a ton of dust otherwise.
think about it and see if it makes sense on a hands on perspective.
Anyway - since you have two fans pushing in - you want 2 fans pulling out. However you likely already have that with the one fan on the case and the fan on your PSU.
Now - based on your case design - I would suggest 2-140mm on top pulling out and 2 - 120 mm on the bottom pushing in. Also - be sure to put this case on a hard surface as you will not get good intake if placed on carpet, and put this up above the floor - as you will be sucking in a ton of dust otherwise.
think about it and see if it makes sense on a hands on perspective.
- Oct 30, 2004
- 32,255
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- 99,960
The general wisdom is, all things being equal, you want more intake than exhaust .... the general wisdom goes out the window if the fan mounting for the inlets are not filtered. The 450D series is a bit unbalanced in this respect as it has (4) exhaust locations and only 3 intake locations. You don't really need any exhaust fans, most water cooling build have very few.
It's oft thought that because you have air blowing in, you need to have fans blowing out. This has no basis in engineering or thermodynamics. Evert cfm that is blown into your case will find it's way out.... if it didn't, the case would explode.
Think about your home, your office, your school..... most buildings are ventilated by exhaust fans, and use open grilles or louvers to provide make up air. You have an attic fan that pulls air out of your house near the ceiling ? Does it have a companion fan blowing air in ? The use of intake and exhaust fans is dictated by the form factor of the PC. Ideal design would be either:
- Double row of fans across top sucking air out and fresh air coming on thru grilles at bottom
- Double row of fans at bottom blowing air in and open grilles at top letting air out
We don't have that cause the form factor of most PCs has other stuff occupying that real estate.
You have (Bold installed):
[]Fan Mount Locations[/u]
Front: (x2) 140mm
Top: (x2) 140mm
Rear: (x1) 120mm
Bottom: (x2) 120mm
If just adding one, I'd add a 140mm to the top giving you (2) x 140mm in versus (1) x 140 + (1) x 120 out. Of course if the bottom is not filtered, it's not gonna make a whole lotta difference anyway
Best fan (based upon performance/ noise ratio) you can buy .... and $10
http://www.newegg.com/Product/Product.aspx?Item=N82E16835709023
Has 3C cooling advantage over Noctua AF-15
Filling the case with all possible fans would leave negative case pressure which will suck air in thru grilles and that would take dist with it..... but again, if the intakes at the bottom are not filtered, it becomes a moot point as you'll get way more dust being blown in than sucked in.
It's oft thought that because you have air blowing in, you need to have fans blowing out. This has no basis in engineering or thermodynamics. Evert cfm that is blown into your case will find it's way out.... if it didn't, the case would explode.
Think about your home, your office, your school..... most buildings are ventilated by exhaust fans, and use open grilles or louvers to provide make up air. You have an attic fan that pulls air out of your house near the ceiling ? Does it have a companion fan blowing air in ? The use of intake and exhaust fans is dictated by the form factor of the PC. Ideal design would be either:
- Double row of fans across top sucking air out and fresh air coming on thru grilles at bottom
- Double row of fans at bottom blowing air in and open grilles at top letting air out
We don't have that cause the form factor of most PCs has other stuff occupying that real estate.
You have (Bold installed):
[]Fan Mount Locations[/u]
Front: (x2) 140mm
Top: (x2) 140mm
Rear: (x1) 120mm
Bottom: (x2) 120mm
If just adding one, I'd add a 140mm to the top giving you (2) x 140mm in versus (1) x 140 + (1) x 120 out. Of course if the bottom is not filtered, it's not gonna make a whole lotta difference anyway
Best fan (based upon performance/ noise ratio) you can buy .... and $10
http://www.newegg.com/Product/Product.aspx?Item=N82E16835709023
Has 3C cooling advantage over Noctua AF-15
Filling the case with all possible fans would leave negative case pressure which will suck air in thru grilles and that would take dist with it..... but again, if the intakes at the bottom are not filtered, it becomes a moot point as you'll get way more dust being blown in than sucked in.
AlanWakeFan
Honorable
- Jul 20, 2014
- 195
- 0
- 10,760
I would put it as an exhaust above cpu as well & put one as an intake on the bottom.It will pull in cooler air & help cool hard drives & & other componets & the top will exhaust the heated air.
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