Driver war: Intel GPU vs AMD GPU

[gilgha]

Hi ,

 

I just fresh re-installed Windows 8.1 on my desktop PC which has an Intel CPU (with integrated graphics) + an AMD 7950 GPU.

 

I re-installed the AMD GPU driver as well but what about the Intel GPU?

For the moment, my display will only work if it is plugged to a video port of the AMD GPU (those of the motherboard just don't work).

What are the best practises in this case? Should I install the Intel driver as well? How does Windows handle the two GPUs?

Will Windows be able to use the AMD GPU to run games and the Intel one to stream the screen (for example)?

 

Thanks.

[DigitalHermit]

iirc, win7 above supports multiple display drivers to exist on the system at the same time...

 

Also, as long as you have a graphics card on the system, it automatically uses that for video output (disabling the integrated graphics), unless you set the integrated graphics to be active through the BIOS...

[vengeancek70]

You will only be able to efficiently use one. Because they are not from the same manufacturer, just like you can not use amd and nvidia gpu's in one system.  

You could enable the igpu to work apart fromk the amd gpu, but you won't get double the performance in games.

[Altecice]

Your UEFI/BIOS will detect if there is a PCI GPU and disable the IGPU. 

[Majestic]

You will only be able to efficiently use one. Because they are not from the same manufacturer, just like you can not use amd and nvidia gpu's in one system.  

You could enable the igpu to work apart fromk the amd gpu, but you won't get double the performance in games.

 

Untrue, you have to select in the BIOS that it functions as a multi-monitor device. You can then use it to extend desktop or whatever.

You can also run it as main boot device, plug the cable into the iGPU and still use the add-on card as renderdevice for your games.

 

I was able to boot games on iGPU or GTX670 without rebooting. Done on a Z87 board though.

 

@Altecice, only true if multi-monitor support is disabled.

[Altecice]

Untrue, you have to select in the BIOS that it functions as a multi-monitor device. You can then use it to extend desktop or whatever.

You can also run it as main boot device, plug the cable into the iGPU and still use the add-on card as renderdevice for your games.

 

I was able to boot games on iGPU or GTX670 without rebooting. Done on a Z87 board though.

 

@Altecice, only true if multi-monitor support is disabled.

 

True for an Asus Maximus VII Formula with a 4790k . If the UEFI is set to "Auto" it will detect if there is a PCI GPU and disable the IGPU. You can however explicitly tell it to use one or the other.

[Profquast]

I used an AMD graphics card for my main monitor and an intel iGPU for a second monitor for years without any problems. I'm not sure about mirroring though but I think it will be possible.

[ERSCreeper]

You will only be able to efficiently use one. Because they are not from the same manufacturer, just like you can not use amd and nvidia gpu's in one system.  

You could enable the igpu to work apart fromk the amd gpu, but you won't get double the performance in games.

[MeepLikesToBuildPc's]

yeah if u unplug your pci card it is going to switch to igpu

[gilgha]

Ok thank you all for your answers.

 

I will enable the iGPU in the BIOS settings and then install the corresponding driver.

[mrmonmon2]

Can't use Amd and Nvida in the same system?

Just a while back I was using my 770 for gaming and a 5770 for ltc mining or sometimes for running my secondary screen.

they will work together, and I had the intel igpu running as well in co-op witht the lucid logic program, never again will I do it that way