AMD Ryzen 5 PRO 8640HS 's Advantages
Released 2 years and 3 months late
Higher specification of memory (7500 vs 6400)
Larger memory bandwidth (89.6GB/s vs 76.8GB/s)
Higher base frequency (3.5GHz vs 3.3GHz)
More modern manufacturing process (4nm vs 6nm)
Lower TDP (30W vs 45W)
AMD Ryzen 9 6900HX 's Advantages
Newer PCIe version (4.0 vs 4)