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Drawbacks of blower vs open-air coolers in low-flow cases? - Page 2

post #11 of 19
first, what case are we talking about?
post #12 of 19
Quote:
Originally Posted by moonslug View Post

That graph is pretty concerning for me with my 650W SFF PSU redface.gif Thanks guys, I think I'll stick with the 780. Temperature concerns would take a back seat to my power supply getting overwhelmed.

gk110 is a beast, super powerful for the consumption, 7990 pulls it's weight, better raw performance per dollar now since the big price cuts, but needs a ton more power to do that and is of course crossfire solution

glad i could help if you have 650w psu
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post #13 of 19
Thread Starter 
Quote:
Originally Posted by ghostrider85 View Post

first, what case are we talking about?

fractal node 304.
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post #14 of 19
Fractal Node 304 Node is a Mini ITX case.

It also doesn't have as good ventilation as MicroATX or ATX since the air flow (and internal volume) is lower:
Quote:
2 - Front mounted 92mm Silent Series R2 hydraulic bearing fans, 1300 RPM speed (compatible with 80mm fans) – included
1 - Rear mounted 140mm Silent Series R2 hydraulic bearing fan, 1000 RPM speed (compatible with 120mm fans) – included



http://www.anandtech.com/show/6470/fractal-design-node-304-mitx-case-review-paving-the-way-to-the-future/6


http://www.cowcotland.com/articles/1227-5/boitier-fractal-design-node-304.html


http://www.bit-tech.net/hardware/cases/2012/09/19/fractal-design-node-304-review/3

http://www.kitguru.net/components/cases/henry-butt/fractal-design-node-304-mini-itx-case-review/5/

Your best bet is to use dual fan axial coolers since the side is vented. Having a blower won't give any advantage since the air volume being move is lower. If the side panel was enclosed like on many ATX cases with windows then I would say a blower is better.

I'd think the GTX 780 is a better bet for Mini ITX though, given the lower power use / thermals.

EVGA GTX 780 Classified , MSI GTX 780 Lightning, MSI GTX 780 TF, Galaxy GTX 780 HOF , etc.
Edited by AlphaC - 8/15/13 at 7:14pm
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post #15 of 19
Quote:
Originally Posted by denial_ View Post

Yeah my bad I red it too fast. I totally agree with you about the micro stuttering effect, that sucks wink.gif. But AMD supposedly came out with a solution with the latest beta drivers, lets see how it goes.

My concern is it took AMD years to put out a driver fix after these concerns were identified, and it just hit beta (several months after the 7990 was released at the same MSRP as a 690 with full knowledge of the microstutter problems).
For that reason alone I'm reluctant to use CFX.

If you needed that much rendering muscle, then a 7990 might be a smart choice once the updated driver matures, but I'd still go with a 690 since you can pick them up for the same price used.
Better acoustics and thermals anyway.
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post #16 of 19
Quote:
Originally Posted by AlphaC View Post

Fractal Node 304 Node is a Mini ITX case.

It also doesn't have as good ventilation as MicroATX or ATX since the air flow (and internal volume) is lower:

Your best bet is to use dual fan axial coolers since the side is vented. Having a blower won't give any advantage since the air volume being move is lower. If the side panel was enclosed like on many ATX cases with windows then I would say a blower is better.

I'd think the GTX 780 is a better bet for Mini ITX though, given the lower power use / thermals.

EVGA GTX 780 Classified , MSI GTX 780 Lightning, MSI GTX 780 TF, Galaxy GTX 780 HOF , etc.

The above is quite true. I went from a Galaxy GTX 670 (which used a blower) to an EVGA GTX 780 SC ACX (which uses the dual axial cooler), and the difference in temps is tremendous. You would think that the 670 would have the lower temps since it not only has the blower type cooler, and is a lower powered chip, but the complete opposite is true.

In my gaming experience with both in my node, the 670 would hit between 71-78C, depending on the game and with a custom fan curve. The 780, on the other hand, sits anywhere between 49-56C with the same fan curve! eek.gif

he reference style blowers are particularly useful in situations where you want to run multiple GPU's that are sandwiched tightly together. For usage in the node, you're better off with the axial coolers. thumb.gif
     
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post #17 of 19
Thread Starter 
Quote:
Originally Posted by AlphaC View Post

Your best bet is to use dual fan axial coolers since the side is vented. Having a blower won't give any advantage since the air volume being move is lower. If the side panel was enclosed like on many ATX cases with windows then I would say a blower is better.

I'd think the GTX 780 is a better bet for Mini ITX though, given the lower power use / thermals.

EVGA GTX 780 Classified , MSI GTX 780 Lightning, MSI GTX 780 TF, Galaxy GTX 780 HOF , etc.
Quote:
Originally Posted by covert ash View Post

The above is quite true. I went from a Galaxy GTX 670 (which used a blower) to an EVGA GTX 780 SC ACX (which uses the dual axial cooler), and the difference in temps is tremendous. You would think that the 670 would have the lower temps since it not only has the blower type cooler, and is a lower powered chip, but the complete opposite is true.

In my gaming experience with both in my node, the 670 would hit between 71-78C, depending on the game and with a custom fan curve. The 780, on the other hand, sits anywhere between 49-56C with the same fan curve! eek.gif

Thanks for the hard data and anecdotal evidence, that's what I was looking for. My concern was that the heat from the card would be a concern for the other components, particularly the CPU. But both your arguments here follow that with the ventilation on the GPU-side of the case, that isn't much of a concern.

I actually own a reference 780 SC already. redface.gif It's still sealed though, but I don't think it's worth looking into returning/repurchasing for the ACX cooler since the acoustics are reportedly indistinguishable.[1][2]
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post #18 of 19
Quote:
Originally Posted by covert ash View Post



he reference style blowers are particularly useful in situations where you want to run multiple GPU's that are sandwiched tightly together. For usage in the node, you're better off with the axial coolers. thumb.gif
My experience has been just the opposite actually. Before my 780 I had a Twin Frozr 560 Ti installed in my Node, and while the card itself ran significantly cooler, it drove my CPU temps up 5-10c. Then again I have my H80i rad mounted at the rear exhaust, so all the warm air from the GPU was forced through it.
post #19 of 19
Thread Starter 
Quote:
Originally Posted by Booty Warrior View Post

My experience has been just the opposite actually. Before my 780 I had a Twin Frozr 560 Ti installed in my Node, and while the card itself ran significantly cooler, it drove my CPU temps up 5-10c. Then again I have my H80i rad mounted at the rear exhaust, so all the warm air from the GPU was forced through it.

Thanks for your input. I have a very similar setup going with an H90 and this is what I was concerned about.
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