AMD Ryzen 5 PRO 8640HS 's Advantages
Released 3 years and 3 months late
Newer PCIe version (4 vs 3.0)
Higher base frequency (3.5GHz vs 3.3GHz)
More modern manufacturing process (4nm vs 7nm)
Lower TDP (28W vs 35W)
AMD Ryzen 9 5900HX 's Advantages
Integrated graphics card
Higher specification of memory (LPDDR4-4266 vs DDR5-5600)