Can two 3060 Ti cards be ran in one PC in a way that's as good as one 3080 card?
OR maybe another way - will two 3060 Ti cards perform better than one in say the Unigine Heaven Benchmark?
Not for gaming as there is no NV link, you could use 2 for compute tasks though.
That's not true (you don't need the NVLINK or SLI fingers anymore, but nice to have for certain situations). Some games will work even in a hybrid setups AMD + Nvidia card together or different Nvidia cards or AMD cards together. Explicit Multi-GPU or called DX12 Multi-Adapter too, it's same thing, that is used now.
As you can see below.
https://www.techspot.com/article/1137-directx-12-multi-gpu-geforce-radeon/
https://www.pcworld.com/article/303...-and-geforce-come-together-in-directx-12.html
https://gigazine.net/gsc_news/en/20160226-directx12-geforce-radeon-hybrid/
That's what Nvidia below is basically saying these are the games that support this right now and in the future more to come (hopefully if game/application devs will add it and they should really as this is how a modern system works now with more than one GPU for gaming or applications). Just no more SLI and Crossfire as we knew it for gaming. Only games that will work this way must support DirectX 12 and Vulkan (so far) and the game engine enabled to use Explicit Multi-GPU setups.
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
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.
