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Which GPU To Use For Display/Unable to Access Nvidia Control Panel

Last response: in Graphics & Displays
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June 28, 2013 6:14:24 PM

Sorry for asking 2 somewhat unrelated questions, but I'll go through them in order.

So after I cleaned out my PC, I decided to switch the GPU that was displaying the monitor to my other, stronger GPU. I have the two GPU's in SLI and I was wondering would it be better to have my stronger GPU as the display and my weaker one for Physx? Or should I switch it back to what I had before?

On to question 2, so a while ago I lost access to my nvidia control panel. I right click on my desktop and it isn't there. I can find it on the start menu, but when I click on it nothing appears. I found a quick fix on google (install drivers, uncheck everything but Physx) but the same problem happened again shortly afterwards.

Thanks for reading!
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a c 385 Î Nvidia
June 28, 2013 7:13:05 PM

You're going to have to list your video cards. You need to have the same GPU's for SLI, so there shouldn't be a weaker or stronger card. Start there, then we can work on the rest.
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June 28, 2013 8:11:38 PM

17seconds said:
You're going to have to list your video cards. You need to have the same GPU's for SLI, so there shouldn't be a weaker or stronger card. Start there, then we can work on the rest.


I have two GTX 560ti's, I believe the first one is an ASUS card at 900mhz and the second is a PNY card at 822/850mhz (can't remember exactly which one I purchased). They both have 1GB of VRAM
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a c 385 Î Nvidia
June 28, 2013 11:01:20 PM

You should definitely do both cards running in SLI and set your PhysX to "Auto".... once you get access to your Nvidia Control Panel. Don't try to set one only for PhysX, leaving you with just a single card doing all the other graphics. It doesn't matter which you use to attach the monitor, as the faster card will be downclocking to match the 822 MHz speed of the slower one.

Your first step to get your control panel back is to do as much of an uninstall of the drivers that you can. That means to manually uninstall everything "Nvidia" using the Windows Control Panel "Add/Remove Programs" list. After that, restart, and then install the latest drivers downloaded from the Nvidia website. Use the "Clean Install" option and only install those driver components you need, at minimum the display driver and the PhysX driver.
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June 29, 2013 8:10:51 AM

Thank you for the help and info, uninstalling the drivers worked and I have access again. Next time I build a PC I will keep in mind to make sure I get a decent graphics card so I won't have to worry about a second card downclocking (of course I could just OC my gpu in the first place to fix that problem, though I'd rather not try).
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a c 385 Î Nvidia
June 29, 2013 10:34:24 AM

Yeah, you start with both cards at the stock speeds, but you can still overclock them both in tandem back up to the speed of the Asus card, or more. Glad you got things working.
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