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[solved] GTX 460 SLI top card runs very hot - Page 2

post #11 of 48
Thread Starter 
Quote:
Originally Posted by windfire;12515510 
Only use this as a very last resort.

Q1: What brand/model is the 2 GTX460s?
Q2: I see you list Thermaltake DuOrb as GPU cooling. Are you using that on both cards? I am seeing some blue shroud on the cards?
Q3: Can you remove the case side panel to show a better pic of your setup?

One thing you can do now to help out the temperature difference between the 2 cards:
Connect the monitor to the bottom card. With this move, you will make the bottom card the main card of the pair and the main card usually does just a little bit more work (thus slightly hotter) in a SLI setup. This should improve the temperature of the top card by, say, 2-3C.

Q1: Galaxy GeForce GTX 460 GC 768 MB (700/1400/1848)
Q2: no that's my old cooler for my old GTS 250. that card is currently enjoying it's vacation in the closet rolleyes.gif fixed
Q3:
100_1474.jpg
there ya go sir. as u can see, there is 2mm gap between the cards. that's pry the main reason for the heat

yea i tried connecting to the bottom card since both PCI-E slots are X16 and i shouldn't lose any perf. but that did not do much to help the temperature.

btw i'd love to buy a different motherboard, but budget is out after i bought the 2nd card and if i change mobo i will have to buy another copy of windows 7 which is another $30 i believe.
Edited by james8 - 2/24/11 at 7:25pm
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post #12 of 48
just got a gtx 470 SLI myself and they are toasty. a fan directly pointing on the two cards will greatly help the temps. mine reduced to almost 10 degrees on the top card

a676ee02ebdfc8c5744514a426ab222a1298604750_full.jpg
post #13 of 48
You have a mount for a side intake 120mm fan right there on your case door, that will make a huge difference.

Then use this for fan throttling:

http://www.evga.com/precision/

Enable the automatic fan control under settings. Double click the line and it will become linear instead of stepped. You can tweak it as needed.
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post #14 of 48
Quote:
Originally Posted by james8;12515602 
there ya go sir. as u can see, there is 2mm gap between the cards. that's pry the main reason for the heat

The best improvement is to install a 120mm fan to the side grill of your case and point that directly to the gap between the 2 cards. This helps the air intake part. (Edit #1: DIY a fan duct with, say, paper cardboard to funnel the air into the gap. See pic 2 below)

To help the exhaust part, I need to see a more grand view of the PC (ie the area to the rear of the PC (left side of the pic aboe) and the area to the front of the 2 cards (right side of the pic).

Do not install a fan pointing at the cards in the front. The cooling design of jprovido's cards is different from yours. Yours is designed to exhaust hot air in both front and rear directions (see pic 1 below). Using a fan in the front will force hot air back into the card.
Edited by windfire - 2/24/11 at 8:06pm
post #15 of 48
Quote:
Originally Posted by 2thAche;12515894 
You have a mount for a side intake 120mm fan right there on your case door, that will make a huge difference.

Then use this for fan throttling:

http://www.evga.com/precision/

Enable the automatic fan control under settings. Double click the line and it will become linear instead of stepped. You can tweak it as needed.

don't mean to hijack the thread but can I use this and msi afterburner at the same time? I'd like to try that fan profiling you.
post #16 of 48
Quote:
Originally Posted by jprovido;12515912 
don't mean to hijack the thread but can I use this and msi afterburner at the same time? I'd like to try that fan profiling you.

its just better to use MSI AB and just edit the auto fan speed table to your desired throttling..

back on topic..teh only solution you can opt to use is the side fan..plus tweak your fans..in my case i just changed TIMs and edited the bios for both cards well the distance between temps are just 4 degrees with a .60amps fan on the side..plus a pull fan on the back to help drag more air outside..
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post #17 of 48
Thread Starter 
I tried installing a side fan, the only problems is that the protruding heatpipe from my CPU cooler is preventing that. i might have to spend sometime cutting the plastic frame of the fan.
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post #18 of 48
Quote:
Originally Posted by james8;12516198 
I tried installing a side fan, the only problems is that the protruding heatpipe from my CPU cooler is preventing that. i might have to spend sometime cutting the plastic frame of the fan.

well you are deemed to do that since you are getting high temps..that leaves you no choice..
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post #19 of 48
Thread Starter 
Quote:
Originally Posted by kairi_zeroblade;12516196 
its just better to use MSI AB and just edit the auto fan speed table to your desired throttling..

back on topic..teh only solution you can opt to use is the side fan..plus tweak your fans..in my case i just changed TIMs and edited the bios for both cards well the distance between temps are just 4 degrees with a .60amps fan on the side..plus a pull fan on the back to help drag more air outside..

are u running the cards right next to each other like I am or do u have extra space between them?
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post #20 of 48
Quote:
Originally Posted by james8;12516198 
I tried installing a side fan, the only problems is that the protruding heatpipe from my CPU cooler is preventing that. i might have to spend sometime cutting the plastic frame of the fan.

The position of the side fan should be as shown in the pic below and it does not seem that it could interfere with heatpipes from your CPU cooler. (see pic 1 below)

I suspect the interference you are encountering is due to your using a 120mm fan. I give a little bit more thought and I would rather suggest you to use a smaller fan (eg 80mm or 92mm) for 2 reasons:

a. smaller so that the frame of the fan does not interfere with the CPU cooler heatpipes

b. more importantly, a smaller fan will spin faster. With higher air velocity (higher air pressure), the air can penetrate better into the gap.
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