Can A PC Use Two Different GPUs?

[Elijah_11]

So I'm going to building a new computer soon and I am going to get the MSI R9 390 graphics card, but I already have MSI Geforce 750ti that gives me the Geforce Experience. I was wondering if I could use both of those GPU's in one system for good performance and the use of Geforce Experience. I want my monitor plugged into my display but my 750ti be there adding performance into my pc how should I do this? And is it possible?

 

[scuzzycard]

There is no way to combine an NVIDIA and an AMD GPU to get increased performance. You can't even use an NVIDIA card for physx if you have an AMD GPU.

 

[rhysiam]

DX12 does offer a mode to game developers called "Explicit Multi-adaptor" which can potentially use two entirely different GPUs to improve performance. Here's an overview: http://www.anandtech.com/show/9740/directx-12-geforce-plus-radeon-mgpu-preview

I remember a Microsoft presentation a while back which showed a demo run with improved FPS from using an Intel onboard GPU working together with a relatively high end discrete GPU, when compared to just the dicrete GPU alone. I thought would never make any tangible difference. That was, of course, a closed tech demo by Microsoft, so not a trustworthy indication of where things are heading.

Having said all that, there are only a couple of titles which actually implement Explicit Multi-adapter and in those, with the huge performance difference between a 750ti and 390, you're very unlikely to see worthwhile gains in even those few titles. So while technically possible, it's not really practically worthwhile.