Need clarity on mixing GPUs within a single system

[beenyweenies]

I've searched the forums and haven't found a clear answer so sorry if this has come up before. I am considering building a rig with a Quadro 4000 for monitoring and a pair of 1080ti cards for rendering. Here's what I'm trying to figure out:

1. Do I need both the Quadro driver AND the standard driver installed? Any problems having both installed like this?
2. What is the correct installation process for this to work as expected? Is it necessary to install the 1080ti cards/drivers first, then remove the 1080 cards from the machine, switch the monitor cable to the Quadro and install that driver, then put 1080 cards back into machine?
3. On the off chance that I want to use one of the 1080 cards to drive the monitor (e.g. for gaming), can I just run a cable from one of the 1080ti cards to the second input on my monitor, or does Windows disable the additional cards at boot?

[hermit.crab]

We can guarantee that if the OS locates the mentioned GPUs you would be able to utilize them for rendering. However, for the actual driver installation process, it would be best to contact Nvidia for they most certainly have more information about the compatibility and driver requirements of their products.

[vlado]

As far as I know we have almost always had issues getting a Quadro and a GeForce to run together; we have not found a specific approach that is always successful, usually we try different drivers until things work.

Best regards,
Vlado

[beenyweenies]

As far as I know we have almost always had issues getting a Quadro and a GeForce to run together; we have not found a specific approach that is always successful, usually we try different drivers until things work.

Best regards,
Vlado

Thanks for the reply, Vlado. Do you think Quadros provide any additional stability for Vray users, versus consumer-grade video cards? Do you guys see less crashes when Quadros are used for monitoring?