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Old 12-07-08, 05:34 PM   #1
MikeC
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Thumbs up Cheap SLI Cooling

I recently switched back to SLI and although I wasn't satistisfied with the high GPU temperatures, like some of you I keep the side of my case open since I swap out graphics cards frequently.

With an SLI configuration using the GeForce GTX 280, I was able to knock of 13 C (from 98 C to 85 C) in the Furmark Benchmark at load using a quiet running 120mm fan! This was accomplished by affixing the 120mm fan to blow hot air away from the GPUs like so:



A 120mm fan is perfect for this type of application as it does a great job of pushing the heat generated from the graphics cards out of the case while running extremely quiet.

At idle the GPU temps are running at 50 C / 49 C with a default GPU fan speed of 40%. At 50% fan speed, temps drop to 48 C / 47 C and at 60%, temps were 45 C / 43 C. Room temperature during testing was 70 F / 21.1 C.
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Old 12-07-08, 06:02 PM   #2
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Default Re: Cheap SLI Cooling

Nice. I did the same with my 280 SLi setup and put two Yate Loon 120mms.

Helps a lot.
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Old 12-07-08, 06:20 PM   #3
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Default Re: Cheap SLI Cooling

Is that fan facing the wrong way?

Just kidding. ::
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Old 12-07-08, 06:28 PM   #4
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Default Re: Cheap SLI Cooling

Nice use of electrical tape. Although I would have used duct tape. Would have matched the silver a bit better.
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Old 12-07-08, 06:49 PM   #5
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Default Re: Cheap SLI Cooling

Hey chief, your computer is upside down.
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Old 12-07-08, 07:25 PM   #6
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Default Re: Cheap SLI Cooling

I have that for my hd4870x2 as well (but it's primary purpose was to cool the north bridge but actually it is cooling the hd4870x2s ram heatsink as well).
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Old 12-07-08, 07:51 PM   #7
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Default Re: Cheap SLI Cooling

Excellent idea,


I've been doing this for years.



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Old 12-07-08, 08:30 PM   #8
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Default Re: Cheap SLI Cooling

Good idea. Maybe I should just take the side panel off mine and put a fan there like that.
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Old 12-07-08, 08:46 PM   #9
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Default Re: Cheap SLI Cooling

I gave it a try but, it didn't help me much. This case does have a ton of air flowing through already though.
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Old 12-07-08, 11:15 PM   #10
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Default Re: Cheap SLI Cooling

I have 2 120mm fans blowing directly on to the cards. Is reversing the fans and taking heat away a better solution?
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Old 12-08-08, 05:36 AM   #11
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Default Re: Cheap SLI Cooling

Quote:
Originally Posted by crainger View Post
Is that fan facing the wrong way?

Just kidding. ::
-1
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Old 12-08-08, 05:38 AM   #12
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Default Re: Cheap SLI Cooling

Quote:
Originally Posted by einstein_314 View Post
Nice use of electrical tape. Although I would have used duct tape. Would have matched the silver a bit better.
Yes, I have duct tape and I know exactly where it is!
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