Multi-GPU configurations aren’t very popular these days, that’s for sure. It doesn’t mean NVIDIA isn’t working to provide improvements to SLI users, though.
3DCenter user Blaire, creator of the popular SLI Compatibility Bits Thread on that forum, recently discovered that NVIDIA introduced Multi-GPU Checkerboard Rendering with a recent driver release.
It did so ever so silently. In order to enable this feature, you will need to do it via the NVIDIA Inspector Profile tool by changing the settings to be the same as in the screenshot below.
On the basis of my tests, it is apparently one -based MultiGPU-Render method, which allows more efficient data / memory accesses (P2P) between two suitable NVIDIA “Turing” graphics cards with NVLink interface, with the special feature that it also copes with DirectX 12 games / applications! And that’s what makes it so interesting! The new mode apparently replaces the old Split-Frame-Rendering mode (it is activated with the same Setting ID) which was not officially available for some time via NVIDIA Driver Control Panel, but the new CFR-Mode works for all current ones DirectX API’s, from DX10 upwards!
You might remember that Checkerboard Rendering became popular after its use in Rainbow Six: Siege and then as a staple of PlayStation 4 Pro’s 4K games. The difference is that the technique was used there to display even pixels on one frame and odd pixels on another frame to save performance; for multi-GPU configurations, the goal is to allow one graphics card to draw even pixels and the other to take care of odd pixels, all in the same frame.
3DCenter’s Blaire tested the feature in several games, noting that it can potentially work on DX10/DX11/DX12 titles, though it depends on the individual game. A few like Monster Hunter World and GRID…