Over the last year, we have been hearing a lot about DirectX 12 and now we are finally starting to see just what the new API can bring to the table. So far, DirectX 12 performance has been measured with Ashes of Singularity on both AMD and Nvidia GPUs, but what happens when you put them both together in SLI? In a recent update to the early access title, support for multi-GPUs was added, allowing you to pair an AMD GPU with an Nvidia one or vice versa.
For those who don’t know, Ashes of Singularity is an Early Access RTS title on Steam using DirectX 12. The latest build allows for multi-GPU Explicit Multi-Adapter functionality, one of the API’s two multi-GPU modes. This new function allows inherently different graphics cards to work together efficiently, meaning different architectures, integrated GPUs and cards from entirely different makers can work together to pump out frames.
Anandtech was the first to test out multi-GPU Explicit Multi-Adapter functionality in its own tests, pairing up a GTX 980Ti, Titan X, R9 Fury X, an R9 Fury and mixing them up in different configurations:
Click images to enlarge. Source: Anandtech.
The site even worked out the performance gain percentages:
Explicit Multi-GPU support is a new addition to DirectX 12 and so far, it seems to be working fairly well. The full report is really worth taking a look at and goes in to much more depth than we could get in to in this news story. This is just the first application of this new technology as well, hopefully we will see things get better with time.
KitGuru Says: This level of multi-GPU support is exciting to see fully up and running. It holds up quite well too judging by the numbers. It will be interesting to see if Nvidia and AMD begin to actively support this technology at all going forward.