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Individual fan profiles in SLI? - Page 2

post #11 of 16
Are you trying too keep voltages down too keep your fan speed down, or do your temps get too high at normal voltages?

Personally I would just try and live with it - my rig is SO loud now, but after a week ive gotten used too it.
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post #12 of 16
Quote:
Originally Posted by Krossfyre;14338882 
Yes, a different fan profile for each card. Both of the cards spin at different RPMs at a set percentage. I'll just give an example. I have the fans set at 50% right now. The bottom GPU spins at 2000 RPMs and the top at 2600 RPMs. The top one idles at around 38C, while the bottom one at 45C. Under load, when the temps rise to about 70C, the bottom kicks up to like 70%, which is like 2800 RPMs, which is completely tolerable. Yet, the top one is all the way at 3400 RPMs, which is like 4 times louder than 2800 RPMs. So, I want different fan profiles so the top fan behaves more like the bottom fan.

Um ... maybe I'm missing something, but if you're wanting them to basically behave like the bottom card does in auto-fan mode, why can't you just set up a single fan profile in MSI Afterburner, that roughly mimics the fan's temp/speed curve of the bottom card? headscratch.gif

Have you tried reversing the cards at all? Sometimes one of the two cards will by nature run cooler ... obviously you'll want to make that your top card.
Edited by brettjv - 7/26/11 at 1:21am
    
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post #13 of 16
Thread Starter 
Quote:
Originally Posted by jacobrjett;14347420 
Are you trying too keep voltages down too keep your fan speed down, or do your temps get too high at normal voltages?

Personally I would just try and live with it - my rig is SO loud now, but after a week ive gotten used too it.

Lower voltages are helping to keep my temps down and it is also reducing the stress on my PSU (every little bit helps).
Quote:
Originally Posted by brettjv;14349601 
Um ... maybe I'm missing something, but if you're wanting them to basically behave like the bottom card does in auto-fan mode, why can't you just set up a single fan profile in MSI Afterburner, that roughly mimics the fan's temp/speed curve of the bottom card? headscratch.gif

Have you tried reversing the cards at all? Sometimes one of the two cards will by nature run cooler ... obviously you'll want to make that your top card.

The top card is the cooler card, but that is only because of the fan speeds. If I set my fans to run at 50%, then the top card's fan is rotating at 2600 RPMs, and the bottom card's fan is rotating at 2000 RPMs. That is a big difference as far as the amount of air getting sucked in to the top card compared to the bottom. If I set the speed to stay at 50% up until 70C, then the bottom card will kick into a faster speed as it will reach that 70C barrier quite quickly (being that the fan is only running at 2000 RPMs). Yet, that higher speed is still relatively quiet, and lets my card settle at about 74C under intense gaming. On the other hand, when the top card reaches 70C, and the speed increases by the same amount as both card are bound by the exact same fan profile, the fan becomes a leaf blower. Yes, it will cause the card to cool down even faster and return to under 70C, but then that will cause the fan speed to drop again and the card will hit that 70C barrier again. Thus, the top fan is switching back and forth between quiet and a leaf blower, and it is very, very annoying. Hence, my need for separate fan profiles.
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post #14 of 16
I've tried myself and haven't found any way to get separate fan profiles with software. You'll have to look at flashing both cards to the same BIOS so they have identical hardware fan profiles, but even then if the fans are physically different they won't spin the same.

If the main problem is temps then get a side intake fan for your case that blows right on the cards. Should be a must-have for SLI anyway.
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post #15 of 16
Thread Starter 
Quote:
Originally Posted by 2thAche;14366138 
I've tried myself and haven't found any way to get separate fan profiles with software. You'll have to look at flashing both cards to the same BIOS so they have identical hardware fan profiles, but even then if the fans are physically different they won't spin the same.

If the main problem is temps then get a side intake fan for your case that blows right on the cards. Should be a must-have for SLI anyway.

Wouldn't flashing them with the same BIOS void the warranty? And I already have a side intake fan, and I just purchased another about 3 days ago.
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post #16 of 16
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