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Help, which way should I orient my Noctua U12S? (Diagram included)

post #1 of 11
Thread Starter 


I'm assuming exhaust should be vertical to help compensate for the open GPU cooler?
post #2 of 11
I would make the exhaust horizontal actually. That way it's not fighting the rear fan for airflow, especially since it doesn't look like there are top exhaust fans in this case. Even if there were I think the CPU would run quite a bit hotter oriented vertically while there shouldn't be an issue for the GPU in either way.
post #3 of 11
Quad-slot GPU? Dayum wink.gif
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Folder Rodriguez
(21 items)
 
   
CPUMotherboardGraphicsRAM
i7 3770k MAXIMUS V FORMULA EVGA 680 FTW+ 4GB  16GB (2x8GB) G.SKILL Trident X 2400mHz CL10 1.65V 
Hard DriveHard DriveOptical DriveCooling
Corsair Force 3 120GB SSD Seagate SV35.5 2TB 64MB cache 7200 RPM HDD LG blu-ray R/W Heatkiller CU 3.0 Nickel/Black 115X 
CoolingCoolingCoolingOS
Swiftech MCP355 w/ Petra's Mod Top Undecided radiator config 12mm OD push fittings, and E22 12mm acrylic tubing Slackware 64-bit 
OSMonitorKeyboardPower
Arch Linux 64-bit Asus 24" 1920x1080 LED Rosewill 9000 w/ MX Blues Seasonic X650 
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post #4 of 11
Thread Starter 
Quote:
Originally Posted by spikeSP View Post

I would make the exhaust horizontal actually. That way it's not fighting the rear fan for airflow, especially since it doesn't look like there are top exhaust fans in this case. Even if there were I think the CPU would run quite a bit hotter oriented vertically while there shouldn't be an issue for the GPU in either way.

I'm installing a 140mm fan on the top, that's why I have the red arrow there.
post #5 of 11
Assuming you have the Define R3/R4 I suggest you use the front top vent intake so cooler gets cool air and exhaust the cooler out the back. Try removing unused PCI slot covers and experiment with side vent to see if intake or exhaust works best for GPU. Remove unused HDD cage.

Another option is rear intake to cooler and exhaust out the top.
post #6 of 11
Thread Starter 
Quote:
Originally Posted by doyll View Post

Assuming you have the Define R3/R4 I suggest you use the front top vent intake so cooler gets cool air and exhaust the cooler out the back. Try removing unused PCI slot covers and experiment with side vent to see if intake or exhaust works best for GPU. Remove unused HDD cage.

Another option is rear intake to cooler and exhaust out the top.

The top HD cage won't be installed on my build. I only use 3 HD's. The top intake idea is interesting and it kind of makes sense. It'll be like a little "closed loop" air stream.
post #7 of 11
Thread Starter 
Actually if I change the top or rear to an intake, it wouldn't work, since those slots don't have a dust filter.
post #8 of 11
Quote:
Originally Posted by doyll View Post

Assuming you have the Define R3/R4 I suggest you use the front top vent intake so cooler gets cool air and exhaust the cooler out the back. Try removing unused PCI slot covers and experiment with side vent to see if intake or exhaust works best for GPU.
+1
post #9 of 11
Quote:
Originally Posted by Apolladan View Post

The top HD cage won't be installed on my build. I only use 3 HD's. The top intake idea is interesting and it kind of makes sense. It'll be like a little "closed loop" air stream.
That's the idea. GPUs now put out as much or more heat then CPU does so it makes sense to try and keep the hot GPU exhaust away from CPU cooler.
Quote:
Originally Posted by Apolladan View Post

Actually if I change the top or rear to an intake, it wouldn't work, since those slots don't have a dust filter.
Silverstone magnetic mounting filter is easy solution. wink.gif
http://www.scan.co.uk/products/140mm-silverstone-fan-grille-and-filter-kit-magnetic-with-dust-filtering
post #10 of 11
Thread Starter 
found this
Quote:
A further interesting area was the front (F) roof mount in the Define R3 case - something which many cases have these days. This sits just in front of the CPU cooler and, when left empty, provides a nice intake for the cooler to pull air in through as it pleases. Fitting it with a fan was problematic though as the fan actively pushed air past the CPU cooler, down into the case towards the back of the graphics card - something which lead to this setup returning poorer results than we’d expected, especially for CPU cooling. As a result we’d generally advise leaving this fan mount, if your case has one, open and without a fan in it.

http://www.bit-tech.net/hardware/2012/02/10/the-big-cooling-investigation/4
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