Case cooling idea/question

GoogalyMoogaly

GoogalyMoogaly

GoogalyMoogaly

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Hi,

I've got a CoolerMaster HAF 932 case.
I'm currently running 2 GTX 670s in SLI.

Because they've got a non-reference cooler the heat just get exhausted into the case and warms ups everything else.

So I've been trying to think of a way to keep them cooled while also getting rid of the hot air as quickly as possible.

Now with the HAF 932 you has a side 230mm fan, but it can be replaced with 4 x 120mm fans. Now I was wondering, if I used 4 x 120mm fans and set the front 2 to blow into the case and the rear 2 (admittedly right next to the other 2) to blow out of the case (or vice-versa) would this feed cold air into the case/cards and then extract the hot air quickly or would it just screw up the airflow completely by exhausting the air almost as fast as it was blowing it in before it had gotten to the graphics cards?

Did I explain that well?
 
To be honest, it looks liek cooling configuration is correct. Replacing the 230mm by 4x120mm all doing INTAKE might help a bit but might also be noisier. Setting 2-in-2-out is unlikely to improve things.

Ideally for SLI you'd want cards that exhaust out of the case, though I have a suspicion that something like the Raven case might cope with what you have. Have you tried a PCI slot exhaust cooler in between the two GTX670 or is that not possible?
 
I'd have thought it would totally mess up the airflow and 4x 120mm fans on a door would also be horribly noisy.

Stick with the single side intake fan, you have plenty of exhaust going on already.

Sometimes folk worry too much about a degree or two when there's really no need. Electronics are happy to run warm.
 
Agree with covenantuk. your fan arrangement should be good.
And Tealc too.

Depending on where you could place 120mm fans it might be possible to duct them directly into GPU fans.

I'm a firm believer in air separatist; keep warm and cool air apart. I use air flow and ducting to do it.

Have you removed all unused PCI slot covers? That will let more air out .
 
how much of a gap do you have between the 670's , do they run at the same sort of temps ?

as doyll mentioned maybe worth seeing if you could work some ducting on 1 or both of them to vent out of the pci slot close to the cards.

drop the side off the case and see how the temps go, if they drop about 5+ degrees then your airflow might be able to be improved.

only thing about the fans is that you have more intake than exhaust, maybe try disconnecting the side fan and see how it affects the temps, but keep a close eye on it so things don't get to toasty.
 
I always do more intake then exhaust.... with filters on intakes. 2x 230mm vs 1x 230 + 1x 140 is not much extra intake.

We need to know GPU temps
 
I'm using a Rampage IV Extreme so there are 3 slots between the PCI-e slots used. One is taken up by the cooler, leaving a 2 slot gap. I also have an Asus Xonar DX between the cards, but there is 1 slot gap between that and the fans of the graphics card above it.

Right now the top card is idling at 37ºC and the bottom card is 32ºC.
During 1 run of Heaven earlier the top card hit 70ºC and the bottom card hit 65ºC.
 
65-70c is not hot for your cards.

so fair to say top card is not getting air as good as lower card.
GeForce GTX 670 with fan at front of side?

Which slots are GPUs in? Could the card between them moved?
 
yeah, that's no good.

Your temps are below what reviewers hit. I wouldn't worry much. Suppose you could make a V duct from part of side fan to GPU fan and see if that forces more cool air to it. maybe a divider behind GPU fan to keep hot air from swinging back into it. Really hard to say without actually testing to see. I moved a 140mm side fan up 50mm once and dropped CPU and mobo temps by 6c.
 
2 in and 2 out would be rather inefficient, you'll get a circle of reused air. The warm air out will be sucked in by the two intakes and repeat.
Would advise against that and advise testing all variations to find the best temperatures yourself.
 
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