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Intake Vs Exhaust


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6 replies to this topic

#1 JamieH

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Posted 23 June 2008 - 01:57 PM

OK, I have an intake fan on the front of my case, and an exhaust fan on the back via the power supply.
I have another fan mount on the left side for another fan, should I add an exhaust or an intake fan here?

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#2 hamluis

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Posted 23 June 2008 - 02:24 PM

Depends...

Basically it works this way, IMO...cool air in from the front...forces heated air up...heated air is drawn out back by PS fan.

Ancillary fans...depend on how the case/components are set up.

I have another fan just below my PS fan, blowing out.

If I had a side fan...I guess that I would insure that it's blowing onto something that's hot (video card, etc.), but that's just the way that I look at it.

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#3 garmanma

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Posted 23 June 2008 - 03:17 PM

You want to balance the CFM as much as possible. I would say if one has to be greater than the other, I rather it be pulling (exhausting) the air. Think about it, for years that's all there was , was just exhaust fans
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#4 Sterling14

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Posted 23 June 2008 - 06:40 PM

I think the best set up is fans blowing out in the back and top, and air coming in from the front. Thing is, a lot of cases don't have good front air intake. Exhaust is more important then intake though.
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#5 JeremyTM

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Posted 24 June 2008 - 07:26 AM

Getting the heat OUT is the most important element. Cooling is just an add-on. Something to keep in mind. Garmanma is right.

#6 hamluis

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Posted 25 June 2008 - 06:28 PM

...and we all know that the heated air will rise above the cooler.

I don't see any point in having lower-level exhaust fans...as first debuted in the Win 98 era (plugged into PCI/ISA slots).

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#7 garmanma

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Posted 25 June 2008 - 07:25 PM

That's why I like the newer power supplies with a big fan on the bottom
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