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My gpu is underclocked and i don't know why...

post #1 of 10
Thread Starter 
ok I first noticed my gpu was underclocked when i was running kombustor. I am at the moment running sli 580's both liquid cooled evga's. I had the both overclocked to 940 coreclock and 2300 memoryclock, after that i run combuster and see my second gpu is running at 440 coreclock.

Is my card dead or is it a software issue

thanks for the help in advanced!
post #2 of 10
It downclocks when not being used. Kombustor isnt SLI, so it probably just down clocks the other one to lower heat output / power usage.
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post #3 of 10
Thread Starter 
thanks, can you tell me of one that does work for sli?
post #4 of 10
Kombuster does support SLI...

if you go to the startmenu and select the SLI version that is tongue.gif
post #5 of 10
Thread Starter 
i can't find the sli version on the start menu... any other ideas?
post #6 of 10
I've had times where my cards will randomly stay permanently underclocked to the point I had to reboot. Also, an unstable overclock will sometimes cause downclocks. In this case it probably has something more to do with the program (kombuster).
post #7 of 10
Go fullscreen.
post #8 of 10
enabling force 3d clocks in the cfg can solve this sometimes too.
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post #9 of 10
Thread Starter 
Quote:
Originally Posted by ezikiel12;15196279 
I've had times where my cards will randomly stay permanently underclocked to the point I had to reboot. Also, an unstable overclock will sometimes cause downclocks. In this case it probably has something more to do with the program (kombuster).


when i first ran it today my card were stock, also i am running kombustor fullscreen
post #10 of 10
Just avoid Kombuster, your card has overcurrent protection (OCP) which will throttle your core clock down to 405Mhz when it detects programs that Nvidia has deemed power viruses, such as Kombuster, Furmark, OCCT GPU or anything else that is purely a GPU "load or stability tester". That was likely not the issue you were having with your second GPU not being utilized as people seem to believe that there was a setting you were missing or something but just wanted to let you know that Kombuster is not worth your time to use even if you did get it working. For stability testing I like Ungine Heaven for about 45 minutes and then multiples hours of the most stressful games you own.
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