The Nvidia driver has used system memory fallback for a couple of years now. https://nvidia.custhelp.com/app/answers/detail/a_id/5490/~/system-memory-fallback-

The Nvidia driver has used system memory fallback for a couple of years now. https://nvidia.custhelp.com/app/answers/detail/a_id/5490/~/system-memory-fallback-for-stable-diffusion https://nvidia.custhelp.com/app/answers/detail/a_id/5490/~/s...