An AMD Ryzen 9 5900H APU has been tested on various synthetic benchmarks as part of a Mechrevo gaming laptop that also comes with an Nvidia GeForce RTX 30 GPU. The results for the Zen 3 Ryzen 9 5900H chip in Cinebench showed welcome generational performance improvements over fellow 8-core chips Ryzen 9 4900HS and Intel Core i7-10875H.
https://www.notebookcheck.net/AMD-Ryzen-9-5900H-in-leaked-Mechrevo-laptop-with-GeForce-RTX-30-GPU-shows-very-promising-synthetic-benchmark-improvements-over-Ryzen-9-4900HS-and-Intel-Core-i7-10875H.513882.0.html