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Cooling Advice for 3way Crossfire in a HAF 932

post #1 of 7
Thread Starter 
Basically I have a 3 6950s (flashed to 6970s) jammed in my case. The only space between them being created by a folded bit of cardboard wedged in the corner between the cards to open the fans up to some air. Atm during gaming they normally stay below 95oC which I'm happy with, however if I can improve the cooling a bit without watercooling them yet.

My main question is this, would it improve temps at all if I was to swap out the 230mm stock fan on the side of the case with 4 relatively low noise 120mm fans. And if yes which fans would you advise, below are a few I pulled off of Scan.co.uk but any better ideas are welcome, thanks.

http://www.scan.co.uk/products/120mm-scythe-gentle-typhoon-1450-rpm-cooling-fan-see-ln31513-for-replacement
http://www.scan.co.uk/products/120mm-akasa-apache-black-ultra-silent-fan-hdb-bearing-pwm-fan-oem-fan-only
http://www.scan.co.uk/products/120mm-noctua-nf-s12b-flx-ultra-quiet-flexible-%28veri-speed%29-cooling-fan
http://www.scan.co.uk/products/120mm-noctua-nf-p12-vortex-control-quiet-case-fan-%28using-vortex-control-notches%29
Gaming Rig
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Gaming Rig
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post #2 of 7
Mount a fan to air can blow towards the cards and try to seperate the cards further if thicker card. I had the same issue with my CF, but to solve the issue, dropped card 2 from slot 3 to slot 4. There is a 10CM gap with 120mm fan mounted through a Coolermaster VGA cooler air duct.

Ensure good cable managment and air flow.

I hope i have helped answer your question and i am sorry if i've misunderstood. Good Luck! smile.gif

BradleyW
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post #3 of 7
you could do what this guy did . He got 15-20°C drop.

If your going to buy noctua, you might as well just get yate loons or zalman F3's they preform similar for a lower cost.

Zalman F3 in the UK are cheaper than yate loons, you get anti vibration mounts and a resistor wire to reduce the voltage to 7V.

But in terms of airflow/noise you can't beat the gentle typhoon and can't forget the great static pressure they have. If you do go for the noctua go for the one with the highest static pressure.
post #4 of 7
Thread Starter 
Thanks for the advise, I was considering a way of pulling the hot air away from the back of the case off to the side (my case has its back to a wall), I hadn't considered making a shroud to forcefully direct the air though which might be a good idea. I've never actually done any kind of modding the case before but I think I'll look into it.

Also thanks for the advise on the fans, although no one answered it I would be better off with 4 quiet 120mm, or with the 230mm stock fan that comes with the case.
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post #5 of 7
You'll have better airflow with 4 120mm fans.
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post #6 of 7
Thread Starter 
Cool thanks, would I be right in thinking that for a case fan static pressure is largely irreverent, participially when there is nothing sitting in-front of the fan? In which case, assuming their given values are right the Akasa Apache Black is probably my best bet for a case fan owing to its high air flow and low noise? The GTs being the best bet if I create an airflow tunnel for my graphics cards.
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Gaming Rig
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Core i7 3930K C2 ASUS P9X79 DELUXE 4GB EVGA GTX680 FTW 4GB EVGA GTX680 FTW 
RAMHard DriveOptical DriveCooling
32GB (4x8GB) Corsair DDR3 Vengeance 4x 500GB Seagate 7200RPM LG BH10LS30 10x Blur Ray-RW Noctua NH-D14-2011 
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Windows 7 Home Premium 64bit 3x Samsung 2043BW 20'' Logitech G19 Corsair 1200AX 
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post #7 of 7
Quote:
Originally Posted by n_skid11;13108652 
Cool thanks, would I be right in thinking that for a case fan static pressure is largely irreverent, participially when there is nothing sitting in-front of the fan? In which case, assuming their given values are right the Akasa Apache Black is probably my best bet for a case fan owing to its high air flow and low noise? The GTs being the best bet if I create an airflow tunnel for my graphics cards.

Yes, if a fan is not pushing air through some restriction, its static pressure figure is relatively not relevant.

When you use four 120mm fans on the side panel of your 932 to give extra air to the three HD6950s, I suggest you adapt some form of air duct/fan shroud so that the air can be more directed to penetrate into the gaps to reach the intake fans of the 3 cards. See pic below for the idea.

An example of a duct for 120mm fan:
http://www.scan.co.uk/products/thermalright-hr-01-775-120mm-fan-duct-for-hr-01-and-hr-01-plushr-01x-heat-sink-%28fan-duct-only%29

An example of using a duct for a CPU heatsink but you can easily modify for your cards:
http://www.ncixus.com/products/32773/DUCT-120-B/Thermalright/

I hope this helps you to cool them well.
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