SLI High GPU Core Clock

Calvin3200 · Feb 28, 2016

I recently added another 970 to my system, and now I've noticed that my core clocks are idling at 950 instead of much lower when I only had one card.

Ran into this issue years ago with my 480s, but it only took a driver reinstall to fix that.

Now, I've reinstalled the latest driver, clean installed, and recent driver versions... no fix.

Any thoughts?

System specs in signature

stavrosmast · Feb 28, 2016

set in the control panel not to prefer maxinum performnace

Calvin3200 · Feb 28, 2016

It's set to "Span displays with Surround". I'm running 3 screens - 6040x1080.

unksol · Feb 28, 2016

Most GPUs do not down clock all the way when running multiple screens.

Calvin3200 · Feb 28, 2016

When I was running 1 card it was around 100/200 or something at idle - nowhere near 950MHz

JackNaylorPE · Feb 28, 2016

Things to try.

1. Are you using afterburner or anything like that ? Try unchecking the "sync cards" checkbox and see if both still show this behavior.

2. Disable AB or any other utility.

3. Uninstall all things nVidia, reboot and clean registry of all things nVidia (CCleaner), reboot and reinstall.

Calvin3200 · Feb 28, 2016

I am using afterburner - not overclocking, just monitoring

Unchecked sync cards - no changes

Uninstalled everything nVidia - it reset itself to an older driver - 347.52 and the clock was at 135Mhz - SLI disabled. Enabled SLI and it jumped to 950MHz again.

Not familiar with CCleaner, and how to search for nVidia issues. What should I do with that?

Thank you!

stavrosmast · Feb 28, 2016

If the clock is higher but the temps are still identical then its not a problem for you

JackNaylorPE · Feb 28, 2016

You using Win10 ... what a PITA. Uninstall all nvidia drives and programs and do not let Windows install anything upon reboot

http://www.ilovefreesoftware.com/07/windows-10/disable-automatic-device-driver-downloads-windows-10.html
http://www.addictivetips.com/windows-tips/how-to-disable-automatic-driver-installation-in-windows-vista/

ccleaner runs like any other utility. You tell it to look for problems , review what it finds and act accordingly

AFter uninstalling everything nViida in Control Panel / programs...

1. Download the tool
http://www.piriform.com/ccleaner

2. Back up your registry (if you forget the tool will wask you if you want to when you run it)

3. Run the tool. You will see 5 options in the left panel, select REGISTRY / Scan for Issues

4. You will see 15 categories on the right... check the 1st box (Missing Shared DLLs) and scan for issues

5. If it finds anything, uncheck the first box to the right that says PROBLEM. This will uncheck all the following boxed.

6. Scroll slowly thru the list looking for any mention of nvidia in any of the columns; when ya find one, check that box. DO NOT check any other boxes (unless you know exactly what it is ... i.e. software you have uninstalled)

7. Clix Fix Selected Issues in lower right hand corner. You will get a pop up asking if you want to save the registry ... say Yes if you didn't do so already.

8. Uncheck the Missing Shared DLLs box in left panel and move tot he one below it.

9. Repeat steps 4 thru 8 for each of the 15 categories.

10. Exit and reboot. Install drivers on a now "nvidia clean" system.

Again, do not let Windows detect hardware / install drivers.

Calvin3200 · Feb 28, 2016

Running windows 7
Temps are noticibly higher - at idle and during usage

Did everything there and got the exact same result - 135 with SLI disabled, 950MHz with SLI enabled.

Is this an nVidia SLI issue? I have no idea what else to try here...

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SLI High GPU Core Clock

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