Out of interest.....

Phrik

Phrik

Gawd
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Jan 3, 2006
Messages
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Out of interest, or curiousity even.....

.....could a PC run both the a dedicated GPU, nvidia card, and the iGPU simultaneously, to allow usage of more monitors ?

I remember back when one card or SLI/Xfire was limited to only 2 monitors, but adding another card, of the competitor, it would allow extending another 2 monitors. But when Vista or 7 came out, you won't be able to install or run multiple wddm display drivers at the same time.

Let's say I want to use the dedicated nvidia card just for 1 screen, and the Intel iGPU to expand to other monitors, possible ?

Cheers
 
WDDM 1.0, introduced with Vista, only allowed a single graphics driver, so you could not use solutions from multiple vendors. WDDM 1.1 (and subsequent), introduced with Windows 7, enabled multiple graphics drivers.

But to complicate this issue is that you don't actually have a driver for each graphics card, so the driver from the vendor has to support all the cards from that vendor being used. This specifically becomes a problem as vendors drop support for older models with newer WDDM iterations. With Win 10 and WDDM 2.0 as an example you cannot mix newer Nvidia cards with much older ones or newer AMD cards with much older ones, although you can do it cross vendor or with Intel.

As for whether or not you can use a Nvidia card and an Intel IGP that also depends upon the specific motherboard.
 
My Z170 system can in Windows 7.
Not for gaming though.
 
I run my primary monitor off of the CrossFire 7970s, the secondary monitor and a TV output off of the iGPU via the motherboard (ASUS P8Z68-V PRO)
 
Yes on my end. Fiance has a 4590 with a h87 as rock itx board. She has an output going from both a before 960 and on board igpu
 
I'm not sure if this helps.

But there is this program called virtu MVP that is able to combine both IGPU and dedicated gpu. It is my understanding that the program enables the IGPU simultaneously
while connected to the dedicated GPU. Since when you are connected to the dedicated GPU the integrated is disabled.

I'm not sure if it can be used to drive multiple displays through multiple GPUs but its worth a shot given that the IGPU is enabled as well.

You can download a free trial from their site just google virtu MVP.
 
TorryHolt81 said:
I'm not sure if this helps.

But there is this program called virtu MVP that is able to combine both IGPU and dedicated gpu. It is my understanding that the program enables the IGPU simultaneously
while connected to the dedicated GPU. Since when you are connected to the dedicated GPU the integrated is disabled.

I'm not sure if it can be used to drive multiple displays through multiple GPUs but its worth a shot given that the IGPU is enabled as well.

You can download a free trial from their site just google virtu MVP.
Click to expand...

Not trying to combine both dGPU and iGPU in some kind of SLI/Xfire, just need them to both run and usable, plugging the big screen on the dGPU for movies and games, and a small control monitor (touch screen maybe) on the iGPU for the small stuff and music playback.

Plus, iirc, virtumvp works only up to W7
 
Nimisys said:
I run my primary monitor off of the CrossFire 7970s, the secondary monitor and a TV output off of the iGPU via the motherboard (ASUS P8Z68-V PRO)
Click to expand...

Exactly what I'm looking for, much appreciated !
 
I ran 2x GTX680 and my onboard GPU from my 2500k for a while, with the iGPU handling a 3rd monitor. In some cases, you need to set the onboard GPU to primary for it to work while a dedicated GPU is installed. This means your bios info will show up on the monitor connected to the iGPU but won't change which monitor is primary once you are in windows.

Some quirks you might encounter, are videos glitching as you move them from one monitor to the other (assuming they are connected to different GPUs). Videos up on secondary monitors crashing when you launch a game on the primary monitor (again assuming those monitors are connected to different GPUs).

There are also potential driver issues. It's not an issue using AMD/Nvidia along with an Intel GPU as they all have their own drivers. But, for example, if you wanted to put in an old GTX260 or similar to power some extra monitors when you already have a newer Nvidia card, it wouldn't work well (since the older card is not supported by current drivers). You would have to revert to having ALL of your nvidia cards using the older driver that the GTX260 supports. You can't have two different drivers from the same vendor installed at the same time.

All in all, it's easier to just have everything connected to your main GPU. With Displayport, you have lots of options in this regard. If at least one of your monitors supports Displayport, you should already be good to go. Otherwise, you can get cheap active displayport adapters to add extra DVI, HDMI, VGA, etc ports and easily run 3 monitors from a single card, even while doing SLI/Crossfire.
 
GotNoRice said:
I ran 2x GTX680 and my onboard GPU from my 2500k for a while, with the iGPU handling a 3rd monitor. In some cases, you need to set the onboard GPU to primary for it to work while a dedicated GPU is installed. This means your bios info will show up on the monitor connected to the iGPU but won't change which monitor is primary once you are in windows.

Some quirks you might encounter, are videos glitching as you move them from one monitor to the other (assuming they are connected to different GPUs). Videos up on secondary monitors crashing when you launch a game on the primary monitor (again assuming those monitors are connected to different GPUs).

There are also potential driver issues. It's not an issue using AMD/Nvidia along with an Intel GPU as they all have their own drivers. But, for example, if you wanted to put in an old GTX260 or similar to power some extra monitors when you already have a newer Nvidia card, it wouldn't work well (since the older card is not supported by current drivers). You would have to revert to having ALL of your nvidia cards using the older driver that the GTX260 supports. You can't have two different drivers from the same vendor installed at the same time.

All in all, it's easier to just have everything connected to your main GPU. With Displayport, you have lots of options in this regard. If at least one of your monitors supports Displayport, you should already be good to go. Otherwise, you can get cheap active displayport adapters to add extra DVI, HDMI, VGA, etc ports and easily run 3 monitors from a single card, even while doing SLI/Crossfire.
Click to expand...

Clear explanation !! Much appreciated, I'll give it a shot.
 
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