AMD Ryzen 7 5800HS 's Advantages
Lower TDP (35W vs 54W)
AMD Ryzen 5 PRO 8645HS 's Advantages
Released 3 years and 3 months late
Higher specification of memory (7500 vs 4266)
Larger memory bandwidth (89.6GB/s vs 68.3GB/s)
Newer PCIe version (4 vs 3.0)
Higher base frequency (4.3GHz vs 2.8GHz)
More modern manufacturing process (4nm vs 7nm)