Zotac has officially listed three Nvidia GeForce RTX 3060 Ti desktop graphics card variants featuring a GA103 GPU. Other than the GPU swap, it seems to have identical specs to its GA104-toting sibling, including 8 GB of GDDR6 VRAM and 4,864 CUDA cores.
https://www.notebookcheck.net/Zotac-unveils-three-GeForce-RTX-3060-Ti-variants-with-a-GA103-GPU.603758.0.html