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New SLI Setup concerns - Page 3

post #21 of 26
Thread Starter 
Quote:
Originally Posted by windfire View Post
So, the top card (regardless if the monitor is connected to it or to the lower card) is always hotter. Correct?

Basically, there is no empty slot space in between the 2 cards as per the layout of your Asus Rampage II Extreme.
And, making matter worse, your Palit GTX460 2GB 's cooling is of the type that sucks cool air in via the centre fan and then dumps it all around (vs the traditional's exhausting to the case rear).

Read another end user's review of a similar situation here:
http://www.tomshardware.com/forum/30...k-review-palit

He has a 15C difference between the 2 cards.

Perhaps the best course of action is to change to another case so that you can move the lower card further down to the bottom white PCIe slot.
Not necessarily the top card is the hottest - Its the card whichever is outputting the visual to the monitor (basically which ever card i plug the DVI cable into gets hotter, regardless if its top or bottom card)

As for the new case... this is definatly something I'm considering... though i'd really like to avoid spending more money if I can.

I'll keep scratching my head and trying new ideas in the mean time.
post #22 of 26
Hmm yeah there must be some sort of fix for this because you're not the only one running with a SLI setup and there must be some sort of simple fix,

Im sorry i can't be more of a help
    
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post #23 of 26
Quote:
Originally Posted by Geriden View Post
Not necessarily the top card is the hottest - Its the card whichever is outputting the visual to the monitor (basically which ever card i plug the DVI cable into gets hotter, regardless if its top or bottom card)

As for the new case... this is definatly something I'm considering... though i'd really like to avoid spending more money if I can.

I'll keep scratching my head and trying new ideas in the mean time.
That HAF should provide enough air.. Especially if you have the side fan mounted.

Did you overclock the cards, and if you did... Did you raise the voltages?

It's really weird, in my SLI setup my cards get hot and the top card is always the hottest, by 4-10c. But they never hit 90C, bottom card hits 75, top card hits ~80... All this on an antec 1200 with a side fan.

Playing devils advocate here: any Fermi card can handle 90c just fine.

Edit: Assuming this is your card THIS it seems it doesn't have the best cooling it could have, which isn't good. And probably the added memory adds to the temperature too.

Have you done extreme benchmarking? Meaning leaving it running benchmarks or kombustor for a long time to see the peak temperature?
Edited by ilam3d - 1/2/11 at 10:09am
post #24 of 26
Thread Starter 
Quote:
Originally Posted by ilam3d View Post
That HAF should provide enough air.. Especially if you have the side fan mounted.

Did you overclock the cards, and if you did... Did you raise the voltages?

It's really weird, in my SLI setup my cards get hot and the top card is always the hottest, by 4-10c. But they never hit 90C, bottom card hits 75, top card hits ~80... All this on an antec 1200 with a side fan.

Playing devils advocate here: any Fermi card can handle 90c just fine.

Edit: Assuming this is your card THIS it seems it doesn't have the best cooling it could have, which isn't good. And probably the added memory adds to the temperature too.

Have you done extreme benchmarking? Meaning leaving it running benchmarks or kombustor for a long time to see the peak temperature?
Yes that is my card, sadly im now aware it is a pretty shameful cooler.
It is Not overclocked, however i did notice on MSI afterburner i had the voltage set at 1025 (probably from when i was tweaking it a long time ago) So i've now lowered that to 1000

Im going to leave Furmark running for a few hours now, see how that goes.
post #25 of 26
The HAF X will let you put the bottom card in the bottom-most slot of your mobo. The 1200 will not. Just so you know.

But still, 90C in furmark is no big deal. If you game, and use v-sync, your probably will rarely break 84C or so, and usually be under 80C depending on the game.
    
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post #26 of 26
Quote:
Originally Posted by Geriden View Post
Not necessarily the top card is the hottest - Its the card whichever is outputting the visual to the monitor (basically which ever card i plug the DVI cable into gets hotter, regardless if its top or bottom card)

The bolded part above is interesting. Usually the 2 cards share the loading fairly equally in SLI and so the temps due to this factor alone are more or less the same. The huge temp difference usually comes from the fact one card receives poorer ventilation.

As for your setup, I imagine the top card has poorer ventilation and so to counterbalance this, my first suggestion is to use the bottom card as the video output card.

Now, next step is to improve ventilation for this bottom card (which will have higher temp according to your observation). Your Asus Rampage II Extreme has 6 expansion slots (with 2nd + 3rd slots occupied by the dual slot GTX460 and the 4th + 5th slots by the lower card) and the 922 has 7 case slots, this means you have 2 empty bottom case slots. My second suggestion is to install an external PCI Cooler such as Nexus WaveAir (see link below) to either one of the 2 bottom case PCI slots for air extraction. I imagine either one is fine.

If for some reason you wish to use the top card for video output, then it will be hotter of the 2 and I will then suggest you install this Nexus WaveAir to the top most empty case PCI slot.

And, the 80mm fan spins at max 1500rpm (producing 17.6dBA, not loud) when connected to a molex. However, if you have a fan controller, perhaps it is better to use it for speed adjustment in order to find the optimal fan speed for optimal card temp.

Link:http://www.nexustek.nl/NXS-nexus-waveair.htm

This device (~US$16?) should be more economical than buying a new case. And I suppose it will not be wasted as it can be used in any other case in the future.

Finally, as brettjv said:
Quote:
But still, 90C in furmark is no big deal. If you game, and use v-sync, your probably will rarely break 84C or so, and usually be under 80C depending on the game.
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