Quick cooling question

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kemperkipie

kemperkipie

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I have this huge Cosmos II case.
I have 2 Palit Jetstream GTX 680 4GB's in it.. I want them to be cooled. I've placed a Silverstone Air penetrator on the HDD-rack wich aims directly between those cards. I also have 2 Corsair SP120 fans in the door-panel, sucking the air away from my GPU's.
Now these 2 Corsair SP120's on the door are pretty far away from my GPU's. And I get the feeling that they don't really suck away specificly the air from my GPU's.

Would it be smarter to turn those SP120's around and blow air towards my GPU's (I've noticed they blow the air pretty far)? It would provide them more cool air and I guess the heat just rises up to get exhausted by my rear or top fans.

Or should I just keep it like this because this is the best option?
 
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fgocards

fgocards

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The best thing to do is to have equal output to input. The 680s aren't pulling air the the outside really, they are just using your case air. For example, if you had two on the door blowing out, I would put 1 pulling in from the front, and 1 pulling in from the back. If you think it's best and feel for comfortable to have them pull air in from the door instead, then do the opposite and have two 120mms on the front and back blowing out.

I can't really tell you what's best for your case because I can't see it, so I'd try both and monitor your thermals. Never have an unequal output air ratio to input air ratio though.
 
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hdeezie80

hdeezie80

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It really depends on how many exhaust fans you have already, exhaust fans are good for bringing down the total chassis temperature and intake is good for cooling a particular area if there is fans already hitting the back plates then keep them as exhaust.

 
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freshbakd

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While the air pressure will have an effect i would point the fans in at the side of the cards.I say this only because while a totally different case i tried both directions and it made a good difference.Give it a try cant hurt

 
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kemperkipie

kemperkipie

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Here are some pictures to give you a better view

So I'll sum up my fans
1 x 200mm front intake fan
2 x 120mm Corsair SP120 Performance at the door for GPU cooling (what I'm trying to figure out what's best)
1 x 120mm (Air penetrator) aimed on my GPU's (placed on HDD bracket in front of my GPU's)
2 x 120mm Zalman ZM-F3 blue fans on the top (Not really strong fans, more silent and for the leds). Attached to my H100i Radiator
1 x 120mm Corsair SP120 Performance (placed on my Corsair H100i.. The second one didn't fit, but it might fit when I reposition my CPU power cable)
1x 140mm Corsair AF140 Quiet edition Rear exhaust fan.

For the HDD rack:
1 x Corsair SP120 Performance front-intake
2 x Cooler Master build-in fan.. pretty noisy.. not sure how much pressure it gives.
But that's not very important.


 
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kemperkipie

kemperkipie

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No actually, 4 on the side, which has 2 for the HDD's, and 2 for the GPU's
3 in the top, all attached to my radiator. (2 colored fans + 1 SP120 performance fan)
2 in the front (1 for HDD, 1 bigger one for the main airflow)
and 1 140mm AF140 quiet fan in the rear
 
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hdeezie80

hdeezie80

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Ok I looked at your pictures and saw a problem with the h100 using a single fan as exhaust, fixing this will help with GPU temperatures by lowering your case temps, the temperature of anything your cooling with fans can only reach the temperature of the air it's moving through it (ambient temperature). It's best to mount the fans at the bottom of the rad they will pull the same amount of air through the radiator and also add airflow to your memory, top GPU back plate and VRMS. Proper exhaust is needed in the top of the case for this to work the back fan is fine, and I would also suggest changing your front intake fans to exhaust fans to remove the heat the HDD's are creating rather than pushing it into the case. Switch those bottom two 120's to intakes and flip the air penetrator to exhaust to atleast pull a little bit of heat from between the cards.

To check if your setup is working open the case after you've been gaming or stressing your system and feel the air with your hand, optimally you shouldn't notice a difference in tips just by touch, if the air flow is an problem when you open the case you'll feel a difference in temperatures before you even put your hand inside in that case.
 
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kemperkipie

kemperkipie

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My H100i radiator has 3 fans, instead of 1. The other 2 are on the top of the case, those are the 2 blue led fans. I might be able to put another sp120 at my radiator to make it 4 fans for push&pull, but I'm not sure if it fits with my CPU power cable on my motherboard. (during building it, it didn't fit, but I might have another way to do it.)
Now the bottom fans are fine, they cool my bottom HDD-rack, which is cool enough..
But I don't feel comfortable changing my front intake to make it a front exhaust, and turning around an air pentrator, to be used as a normal fan? I don't think that's very efficient..
 
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kemperkipie

kemperkipie

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Ok I just went an did a FurMark to reach a whopping 88 C main GPU temp, 75 C secondary GPU.
I've put my hand into my system to really feel where the heat is actually going to, and I noticed some things..
I decided to make a photo of my system, and try to draw where the heat is going. I hope this makes things clear..

bh9xt.png

Hear=here****
Sqaure=Square**** I only noticed the fail after uploading it :p


I'm convinced now that hdeezie80 is right.. I think it would be best to blow air from the doorpanel at the GPU's where the GPU's get this air to blow it up, where my top and rear exhaust clear this heat. When the front fans are sucking away the heat from the back fans of my GPU.

But for that I would think it's best if I get another Air penetrator, and put one SP120 at the HDD-bracket (in my case a GPU-Exhaust-Fan).

What do you think about this plan? Or do you think it's better to put the SP120 aiming on the GPU's, with another SP120 sucking the air away. Or maybe the Air Penetrator sucking the air away....

What would your suggestions be as if I had unlimited SP120's and Air penetrators..
 
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