ROCm usually only supports two generations of consumer GPUs, and sometimes the latest generation is slow to gain support. Currently only RDNA 3 and RDNA 4 (RX 7000 and 9000) are supported: https://rocm.docs.amd.com/projects/install-on-linux/en/lates...

It's not ideal. CUDA for comparison still supports Turing (two years older than RDNA 2) and if you drop down one version to CUDA 12 it has some support for Maxwell (~2014).

It's pretty crazy that a 6900XT/6950XT aren't supported.