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Something I Still Don't Get


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#1 aommaster

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Posted 19 July 2008 - 07:36 PM

Hey guys!

This has been bugging me for a while.

Warm air rises, cold air sinks. We all know that.

So why on Earth does a graphics card fan point DOWN? I mean, doesn't that beat the point? Wouldn't the cooling be more efficient if the fan pointed upwards? :thumbsup:

Is there a reason for this?

Thanks!

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#2 Sterling14

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Posted 19 July 2008 - 08:14 PM

I'm not really sure, but I heard the graphics card fan points upward in BTX form factor cases/motherboards.
"I think there is a world market for maybe five computers." - Thomas Watson, Chairman of IBM, 1943

#3 hamluis

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Posted 19 July 2008 - 08:18 PM

Sometimes...direct air movement is deemed more beneficial...that would be my guess.

Are you sure that they all blow towards the card (I don't have any cards with fans/heatsinks)? I would think that those with heatsinks function in the same manner that CPU fans do (move the air away from the heatsink/card).

Example...when you eat hot food...what do you do?

Take a look at one perspective: http://www.thinktechno.com/2007/03/25/tuto...ic-card-with-5/

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#4 aommaster

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Posted 19 July 2008 - 09:04 PM

I'm not really sure, but I heard the graphics card fan points upward in BTX form factor cases/motherboards

Yes, that is true, but I do not have a BTX motherboard. I'm quite used to the way the motherboard is designed currently, and I personally do not want to change unless there's a big difference in it.

Are you sure that they all blow towards the card (I don't have any cards with fans/heatsinks)?

Not really sure what you mean by 'blow towards the card'. Care to elaborate?

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#5 Sterling14

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Posted 19 July 2008 - 10:05 PM

Well, I think with the graphics card, the fan doesn't actually blow outwards in the direction it's facing like most case fans do, it blows the air in the direction of the heatsink, out of the case.

The thing is, to of course contradict myself, I recently got a dual-slot cooler graphics card, and I can't feel the air being blown out. It feels kind of cool like it's taking in air, but that doesn't seem right. Also, single-slot card's don't have any vents for the outside of the case so this wouldn't really work either. Hopefully I didn't confuse you, because I think I'm a little confused myself :thumbsup: .

Edited by Sterling14, 19 July 2008 - 10:07 PM.

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#6 ab30494

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Posted 20 July 2008 - 08:35 PM

the fan on the card isnt blowning on the card, but more then the heatsink,




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