AMD Ryzen 7 Pro 7840HS 's Advantages
Released 2 years and 5 months late
Higher specification of memory (7500 vs 4266)
Larger memory bandwidth (89.6GB/s vs 51.2GB/s)
Newer PCIe version (4.0 vs 3.0)
Higher base frequency (3.8GHz vs 3.0GHz)
More modern manufacturing process (4nm vs 7nm)
AMD Ryzen 9 5900HS 's Advantages
Lower TDP (35W vs 54W)