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GTX 560 Ti 448 core OC Club - Page 216

post #2151 of 2759
I have two monitors with SLI 448's and each are plugged into seperate cards. My main display is HDMI in card 1 and my second is DVI in card 2. I noticed that my gpu temps have increased 10 degrees each in idle. Also, card 1 will go back to idle speeds but card 2 is maxed out on memory and shader clock. any ideas? The monitors do not share the same native resolution. But they do share the same refresh rate
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post #2152 of 2759
plug them into the same card. by plugging them into separate cards you need to use the ramdac on both cards, instead of just one.
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post #2153 of 2759
Finally getting around to OC'ing the 560.

So far 872MHz @1.025V (stock). Stable at 902MHz @stock volts in OC Scanner, but notice a couple small flickers in Heaven above 872. Looks like its time for some more power!
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post #2154 of 2759
Quote:
Originally Posted by brewmeisterr View Post

I have two monitors with SLI 448's and each are plugged into seperate cards. My main display is HDMI in card 1 and my second is DVI in card 2. I noticed that my gpu temps have increased 10 degrees each in idle. Also, card 1 will go back to idle speeds but card 2 is maxed out on memory and shader clock. any ideas? The monitors do not share the same native resolution. But they do share the same refresh rate

Tried that and GPU1 would not idle, and GPU2 would. Fixed it with Nvidia Inspector by forcing the GPU to P12. It was was stuck on P0.
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post #2155 of 2759
Quote:
Originally Posted by juano View Post

It sounds like instability to me in which case your options are add more voltage, or downclock. If you think it's drivers then just roll them back.



It's not instability because prior to installing the 310.24 beta driver the card had no problem sticking clocks with futuremark benchmarks. It only happens with future mark benchmarks.

I can run Cysis 2, UT3, BF3, Kombuster, without any down clocking issues. I haven't tried many other games or benchmarks but it only happens with Futuremark and it happens before the benchmark is even loaded. It down clocks when the benchmarks scans system before it begins and as soon as the benchmarks starts the clocks are already at 405mhz.

I think 310.24 programmed my card at the BIOS level to down clock during Futuremark. I have tried cleaning out the drivers and after cleanly uninstalling and installing drivers the down clocking issue is still there.

My card doesn't run hot at all.

The card is perfectly stable but this only happens with Futuremark and it happend right after I installed the 301.24 drivers.


Is there a way to get rid of the down clocking feature? I know it is a safety feature but I believe the 301.24 driver is forcing the down clocking. Before I had no problems running up to 1.1GHZ with futuremark benchmarks.
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post #2156 of 2759
Quote:
Originally Posted by brewmeisterr View Post

Tried that and GPU1 would not idle, and GPU2 would. Fixed it with Nvidia Inspector by forcing the GPU to P12. It was was stuck on P0.


Is P12 the highest power state?
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post #2157 of 2759
Quote:
Originally Posted by SonDa5 View Post

Is P12 the highest power state?

P0 = full power 3d
P3 = low power 3d
P8 = video (lower voltage)
P12 = 2d mode (lower voltate)

Got this from:
http://www.overclock.net/t/964370/fix-info-dual-monitor-downclocking-fix-for-nvidia-cards
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post #2158 of 2759
Quote:
Originally Posted by brewmeisterr View Post

P0 = full power 3d
P3 = low power 3d
P8 = video (lower voltage)
P12 = 2d mode (lower voltate)
Got this from:
http://www.overclock.net/t/964370/fix-info-dual-monitor-downclocking-fix-for-nvidia-cards


Thanks. I used NV inspector to force voltage settings on my card.
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post #2159 of 2759
Quote:
Originally Posted by selluminis View Post

You need to eliminate the 7800 card from your set up. I have seen instances where a card that is really out of date like that will hinder systems. I would eliminate it all together.

I went ahead and removed the 7800 earlier but to no avail. Still had drivers reloading and AB resetting my clocks from mild OC's.

It has taken a little more voltage than I hoped, but so far 860mhz @ 1.038v has proven to be stable. I'm thinking I should be able to get 870 out of 1.038v before boosting voltage again.
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post #2160 of 2759
Quote:
Originally Posted by Fossil View Post

I went ahead and removed the 7800 earlier but to no avail. Still had drivers reloading and AB resetting my clocks from mild OC's.
It has taken a little more voltage than I hoped, but so far 860mhz @ 1.038v has proven to be stable. I'm thinking I should be able to get 870 out of 1.038v before boosting voltage again.

Yeah, the drivers can crash fi the oc is unstable. Keep raising the voltage until temps are too high or it is not stable no matter what voltage you throw at it.
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