Is it still the case that a game needs to explicitly support SLI to get a performance gain from it? Are there many titles that do so?
The games listed in Green will work for now till more new games get mgpu support. SLI profiles don't work on 3090s and SLI new profiles have been dropped from Jan 2021 for all cards, support now comes from game or application makers. I have 3090s in sli/nvlink and I use them for work too and the games below that support it for now. I think we need to kick Nvidia in the rear and at least get them to add the sli profiles back for 3090s and allow us at least to use the old profiles on the older games that supported sli for now, yes there will be no more new profiles but then at least we could use nvidia inspector and create our own profiles for now.
https://nvidia.custhelp.com/app/ans...ort-transitioning-to-native-game-integrations
NVIDIA SLI Support Transitioning to Native Game Integrations
Updated 09/17/2020 12:31 PM
NVIDIA SLI Support Transitioning to Native Game Integrations
With the emergence of low level graphics APIs such as DirectX 12 and Vulkan, game developers are able to implement SLI support natively within the game itself instead of relying upon a SLI driver profile. The expertise of the game developer within their own code allows them to achieve the best possible performance from multiple GPUs. As a result, NVIDIA will no longer be adding new SLI driver profiles on RTX 20 Series and earlier GPUs starting on January 1st, 2021. Instead, we will focus efforts on supporting developers to implement SLI natively inside the games. We believe this will provide the best performance for SLI users.
Existing SLI driver profiles will continue to be tested and maintained for SLI-ready RTX 20 Series and earlier GPUs.
For GeForce RTX 3090 and future SLI-capable GPUs, SLI will only be supported when implemented natively within the game.
What DirectX 12 games support SLI natively within the game?
DirectX 12 titles include Shadow of the Tomb Raider, Civilization VI, Sniper Elite 4, Gears of War 4, Ashes of the Singularity: Escalation, Strange Brigade, Rise of the Tomb Raider, Zombie Army 4: Dead War, Hitman, Deus Ex: Mankind Divided, Battlefield 1, and Halo Wars 2.
What Vulkan games support SLI natively within the game?
Vulkan titles include Red Dead Redemption 2, Quake 2 RTX, Ashes of the Singularity: Escalation, Strange Brigade, and Zombie Army 4: Dead War
How about creative and other non-gaming applications -- will those still support multiple GPUs?
Yes, many creative and other non-gaming applications support multi-GPU performance scaling without the use of SLI driver profiles. These apps will continue to work across all currently supported GPUs as it does today.