According to this article : https://www.guru3d.com/articles-pages/far-cry-new-dawn-pc-graphics-performance-benchmark-review,6.html#:~:text=Far%20Cry%20New%20Dawn%20will,the%20upper%20limit%20being%20used.&text=Again%2C%20all%20cards%20consume%20roughly%20the%20same%20amount%20of%20VRAM.

Dawn of far cry is very far from filling 11GB, not even half that, in 4K.