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Simple mod, lowered my temp 15C in my SLI setup

post #1 of 13
Thread Starter 
I know this might be the wrong place but considering that my problem was bad temp with SLI NVIDIA GTX 580s (hitting 93c) i posted it in NVIDIA forum.

This mod is just placing a 120mm fan in the rear where the gpu exaust is located. using the fan has a exaust aswell. I know this have been done plenty of time but would like to share my result.

My top card was hitting 93c before mod

Now my card max load is 78C.

No increase in noise since the fan is low rpm. i believe a higher rpm fan would be better for this. i might order a gt typoon.

My case has bad air circulation because my radiator y mounted in the front, so my case is not getting any cold air intake.

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post #2 of 13
Very nice, but interesting mod. I don't have sli but I would be interested in seeing how this works on a single 580. Would you mind testing this if you get a chance? I don't have a 120 fan or I would test it. +rep for sharing this with us.
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post #3 of 13
Quote:
Originally Posted by eduardmc View Post
I know this might be the wrong place but considering that my problem was bad temp with SLI NVIDIA GTX 580s (hitting 93c) i posted it in NVIDIA forum.

This mod is just placing a 120mm fan in the rear where the gpu exaust is located. using the fan has a exaust aswell. I know this have been done plenty of time but would like to share my result.

My top card was hitting 93c before mod

Now my card max load is 78C.

No increase in noise since the fan is low rpm. i believe a higher rpm fan would be better for this. i might order a gt typoon.

My case has bad air circulation because my radiator y mounted in the front, so my case is not getting any cold air intake.

very interesting. i have a 2nd 560 coming, would you mind posting some more pics of this mod?
post #4 of 13
hmmm, very nice setup... I have the same graphics cards, (stock EVGA's) and same case... I am getting 87C top and 82C lower GPU and my GPU's are only overclocked to 800MHZ... I also have one 120mm side fan and added another mid fan for more air intake into these cards...

Is this one of the stock Tri-Cool fans that you added (set on low; 1200rpm)?

+rep and I will try this out and find a way to hide the wires...
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post #5 of 13
Nice, i will be trying this.
    
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post #6 of 13
Thread Starter 
Quote:
Originally Posted by Chris13002 View Post
hmmm, very nice setup... I have the same graphics cards, (stock EVGA's) and same case... I am getting 87C top and 82C lower GPU and my GPU's are only overclocked to 800MHZ... I also have one 120mm side fan and added another mid fan for more air intake into these cards...

Is this one of the stock Tri-Cool fans that you added (set on low; 1200rpm)?

+rep and I will try this out and find a way to hide the wires...
Is funny cause i did this with a spare fan i had which is a nzxt. I'm not sure the spec of the fan but it did wonders for my cards. I'm right now looking a better fan maybe a Gentle typhoon or so to see if it actually decrease more my temp since this cheap fan did so well. When i get home i would post more pic. The way i attach the fan was with 3mm doble tape, it is well secure and fans is inaudiable.
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post #7 of 13
Would small 40mm fan do the trick by attaching them to the rear of the GPU?
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post #8 of 13
Thread Starter 
Quote:
Originally Posted by trumpet-205 View Post
Would small 40mm fan do the trick by attaching them to the rear of the GPU?
not sure but 120mm does cover the entire gpu vent which is better since is helping to suck more air out. A 40mm might help but it would not cover the entire gpu vent.
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My System
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CPUMotherboardGraphicsRAM
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Hard DriveOptical DriveCoolingOS
[Crucial] M4 256gb Raid 0 (128gb x2) [Samsung] Blu-ray  Watercool  [Win7] ultimate 64bit 
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[Yamakasi] 27" 2560x1440 S-ips [Logitech] iluminated wire [ENERMAX] MaxRevo 1350W [Corsair] 800D 
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post #9 of 13
interesting..step by step instructions please!

how exactly do we mount this fan without looking too ghetto? I got a antec 3 speed and a few noctuas, think it will help? but it will have to be turned on all the time wont it? otherwise it will overheat even more! somebody else try this and tell us about your the results

Reps +
Edited by TheBirdman74 - 10/31/11 at 9:00am
post #10 of 13
Hey guys....coming from a Giant scale Aerobatic pilot myself , we deal with extremely important airflow over our motors to help keep the motors cool and run well. Baffles and adding a high pressure lip on the front/bottom sides of our cowls help tremendously. Rule of thumb is the exhaust side of the airflow should always be 2X - 3X bigger than the entrance area.

On the card/mod thing you did above in the picture , I can see why it would be working better since the fan is forcing air to suck into the card quicker than what the stock fan was. You could try maybe opening the inlet hole slightly as well. I would definitly leave the shrouds on the cards , but the inlet hole may be restricting it slightly as well.

Just a thought.
    
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