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 Post subject: Vid Card Fan Question
PostPosted: Fri Aug 17, 2012 10:36 am 
Coppermine
Coppermine

Joined: Mon Oct 12, 2009 4:47 am
Posts: 686
Which way are the fans blowing on a typical vid card? Are they blowing cold air onto the GPU's or sucking hot air away from them?

I see so many PC cases are coming with 2 120mm fans just for the vid card and I was curious to the airflow.


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 Post subject: Re: Vid Card Fan Question
PostPosted: Fri Aug 17, 2012 11:12 am 
[Team Member]
[Team Member]

Joined: Sat Jun 26, 2004 4:31 am
Posts: 11092
Location: Home Sweet Home
They blow air through the fins and at the gpu, which vents out the back of your pc....usually, some vent inside.

Nasty


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 Post subject: Re: Vid Card Fan Question
PostPosted: Fri Aug 17, 2012 11:52 am 
Smithfield
Smithfield

Joined: Sun Jun 18, 2006 7:37 pm
Posts: 5257
Fans normally push air into the heat sinks. If it's a regular fan, they usually blow air perpendicular to the card, which will then blow out towards the rear and back into the case. If it's a radial fan, it'll push air parallel to the board and out the exhaust port.


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 Post subject: Re: Vid Card Fan Question
PostPosted: Sat Aug 18, 2012 5:11 pm 
Coppermine
Coppermine

Joined: Mon Oct 12, 2009 4:47 am
Posts: 686
For the longest time I had my case's window fan blowing OUT air and now I see how/why that fan should be sucking in cold outside air, so the vid card fans blow cooler air over the GPU.

I see places selling vid cooling cards which is just a fan sits next to the vid card and tries to cool it. Can't see them working well as the PC's cool air intake and the vid card's heatsink fan's seem to be the best bet.


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