AMD’s solution is open source and works on any other graphics hardware. They’d prefer if you use AMD, but you don’t need to for it to work properly. DLSS was created by Nvidia to force people to use their platform. It’s closed source and only works with Nvidia hardware. DLSS is the better software at the moment, but it sucks that Nvidia keeps doing this stuff. (This also means AMD hardware is better for Linux as well, because their drivers are also open source.)