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Dual Display Temps

post #1 of 10
Thread Starter 
Question: it's been a long time since I checked up on this, but should a 470 pushing two 2048x1152 displays run about 20c hotter than 1 2560x1600 display? At desktop now it's running 59C with two 2048 displays and at my dorm it runs 39 at desktop with one 2560 display. Is this about right??

Because I'm thinking it could have something to do with the PSUs at each location. But I'd like to get others' takes before I go investigating that. Thanks
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JJS
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post #2 of 10
I heard that some cards can no longer throttle themselves with 2 or more screens.
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post #3 of 10
I'm not sure about nVidia, but ATi/AMD has higher idle clocks on dual monitors. For example, with the higher end 5000 series, the idle clocks are 157/300 on singles, 400/900 on multiple monitors. This would also make the GPUs run at higher temps. But as I said, not sure about if this is the case with nVidia.
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post #4 of 10
Your 470 is in low power 3d mode. Mine does this too. I use nvidia inspectors multi monitor power savings tool to force it back down to 2d clocks and voltage so that temps don't shoot through the roof. Apparently nvidia made a more recent bios that does this anyways... So, yeah get nvidia inspector. the temps aren't really a problem, but it is the fact that the voltage stays at full power 3d levels.
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post #5 of 10
Thread Starter 
Hey guys figured out my problem. Now it's at 50c at desktop. The issue is, you don't want to do this:


imag0148custom.jpg
imag0150ecustom.jpg

The 8 pin connects into the PSU and I made that cable to just splice in other ground cables. I thought, since I wasn't using the 8 pin on the VGA side, why plug in 8 pins to the PSU side. Well I was stupid, and you can learn from my stupidity.
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post #6 of 10
Quote:
Originally Posted by De-Zant;12868623 
I'm not sure about nVidia, but ATi/AMD has higher idle clocks on dual monitors. For example, with the higher end 5000 series, the idle clocks are 157/300 on singles, 400/900 on multiple monitors. This would also make the GPUs run at higher temps. But as I said, not sure about if this is the case with nVidia.

i can confirm this. since 10.11 and later it actually got worse. 2 monitors = idles @ 400/1200 and 47C, 1 monitor = 157/300 and 35C
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post #7 of 10
actually when using 2 monitors you will get higher idle temps because the videocard stays in 3d mode and only switches between low power 3d and full power 3d mode

i wrote a guide on how to fix it here http://www.overclock.net/nvidia/964370-fix-info-dual-monitor-downclocking-fix.html

it really needs a sticky imo cause there are heaps and heaps of threads on people asking about dual monitors higher temps etc..
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post #8 of 10
Thread Starter 
Nice dude! Thanks I had no idea, I thought it was because the exhaust holes were blocked a little bit. But thinking about that now is preposterous
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post #9 of 10
Quote:
Originally Posted by noob.deagle;12873868 
actually when using 2 monitors you will get higher idle temps because the videocard stays in 3d mode and only switches between low power 3d and full power 3d mode

i wrote a guide on how to fix it here http://www.overclock.net/nvidia/964370-fix-info-dual-monitor-downclocking-fix.html

it really needs a sticky imo cause there are heaps and heaps of threads on people asking about dual monitors higher temps etc..

With Nvidia Inspector you still get a momentary blank screen when switching between P states; Nvidia has stated this is why they don't allow the cards to go into full idle mode and it's an architectural limitation that affects not only Nvidia but AMD as well.
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post #10 of 10
Quote:
Originally Posted by TickleMeElmo;12896303 
With Nvidia Inspector you still get a momentary blank screen when switching between P states; Nvidia has stated this is why they don't allow the cards to go into full idle mode and it's an architectural limitation that affects not only Nvidia but AMD as well.

this is true but its a slight flicker and it never occurs mid program operation, its very much a minimal thing one that i do not even notice unless i look for it.
personally for me tho id take a miniscule flicker for lower temps tongue.gif
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