Benchmarks from an Asus ROG Flow X13 featuring the AMD Ryzen 7 6800HS have leaked online. Compared to the Core i9-12900H in the ROG Flow Z13, the Ryzen 7 6800HS trails considerably. However, the 16 GB of LPDDR5-6400 RAM does help the Radeon 680M in offering a significant advantage over the GeForce MX450 bringing it closer to a GTX 1650 Max-Q.
https://www.notebookcheck.net/Asus-ROG-Flow-X13-AMD-Ryzen-7-6800HS-no-match-for-Flow-Z13-s-Core-i9-12900H-but-Radeon-680M-has-the-GTX-1650-Max-Q-in-sight-thanks-to-LPDDR5-6400.604548.0.html