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How to decide on a case for air cooling (warning - pics) - Page 9

post #81 of 2110
To build off MexGT, and keeping in mind that the Twin Frozr cooler is designed to vent hot air out of the back of the case:

MSI-Twin-Frozr-Temp-Compare.jpg

Using FurMark to heat up the GPU, you can tell it definitely spits hot air out of the machine, but my Mark 1 Mod 0 hand thinks more warm air comes out of the of the GPU side than comes out of the rear vents. I can't feel any air blowing from the card toward the front of the case. With the case side on, CPU temp rose from 33° C to 45°C; with the case open, it went from the same idle temp to 40.5° C. Definitely warmer in a closed box. A side exhaust seems like a good idea.

Also, rather than the top intake right at the front of the case, could you not move the fan to the back of the 5.25 bay? With the front open it will still suck in mostly fresh air from outside the case, using the drive bay itself as a quasi-duct and puts the fan much closer to the parts that need cooler air.
Edited by BBEG - 7/15/11 at 6:17pm
    
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post #82 of 2110
hmm that is a good idea, how would i go about attaching a fan behind my hdd cage?
   
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post #83 of 2110
Copying from [url=]ehume's thread[/url]:

Beta_Evo_modding_2011-05-06_006.png

Beta_Evo_modding_2011-05-06_001.png

I guess you could put foam or line the 5.25 bay with something to keep it from sucking too much air from the sides and more air from the front. That would be ideal.
    
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post #84 of 2110
Quote:
Originally Posted by BBEG;14229754 
To build off MexGT, and keeping in mind that the Twin Frozr cooler is designed to vent hot air out of the back of the case:


Also, rather than the top intake right at the front of the case, could you not move the fan to the back of the 5.25 bay? With the front open it will still suck in mostly fresh air from outside the case, using the drive bay itself as a quasi-duct and puts the fan much closer to the parts that need cooler air.

That should work only if the 5.25 bays are almost ermetic, because the further back you place the fan it wull suck air from the little holes and vents the 5.25 bays have, creating 0 suction in the front pannel and what we want here is air directly from the outside the case, obviously with a front filter because we dont want any dust too.

Also remember airfilters reduce airflow, so if you place the fan way behind the 5.25 drives it will have even less power to get air through the filters.
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post #85 of 2110
i have it at the front cuz if its at the back the temps rise about a temp. i tried this before because as mexgt stated it draws less actual cool air from the front.
   
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post #86 of 2110
Have you guys tried blocking off the side holes in the drive bay so it forms an improvised duct? Foam, electrical tape, I'm sure either would work well and I'm equally sure we all have plenty of both. I would think that would create more or less linear air flow from the front of the case to behind the fan, since air can't be drawn in from any of the side holes since they're blocked off.

Tomorrow I might have time after work to play with this, since I have two Noctua fans doing nothing right now (cooler not installed yet). I'll need to find a CPU stress program too.
    
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post #87 of 2110
Quote:
Originally Posted by chinesethunda;14229952 
i have it at the front cuz if its at the back the temps rise about a temp. i tried this before because as mexgt stated it draws less actual cool air from the front.

thumb.gif
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post #88 of 2110
Thread Starter 
You can't imagine what a joy it is to see all these posts from people thinking up airplans, building their setups and testing the resulting temps. It's just wonderful.

I'm thinking that there are probably several "best" ways to handle gpu cooling, and you won't know what will work until you actually compare temps. So far, I love what I'm seeing.
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post #89 of 2110
I don't know what I could construct a duct with to try to put over the GPU, even if I did idk how to get it to stay. I was thinking just putting a fan behind my hdd right in front of my gpu? probably work too right?
   
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post #90 of 2110
I am running Prime95 again...

I ran it for 7 hours one night, open case, rear fan being one of the 120 Noctuas at the time, and it took a long time to heat up to 65 ~ 67 degrees Celsius.

Running it tonight, and it's climbed to 65 rather quickly... So I am assuming my current airflow setup needs some time of improvement...

I am not sure about cutting out the grill on the rear fan opening to leave it open, but would it be possible to help fix this with a higher CFM fan by any chance or do I need to find other ways of letting the air out more?

*EDIT*

Ah HA! No wonder I didn't feel much air pumping out the back fan... apparently the fan controller is needed to make it run at it's highest output.

I shall wait and see what happens from more testing...
Edited by Hoodcom - 7/15/11 at 9:15pm
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