Intel Pentium Gold 5405U 's Advantages
Lower TDP (15W vs 54W)
AMD Ryzen 7 7840HS 's Advantages
Released 4 years and 3 months late
Better graphics card performance
Higher specification of memory (7500 vs 2133)
Larger memory bandwidth (89.6GB/s vs 37.5GB/s)
Newer PCIe version (4.0 vs 2.0)
Higher base frequency (3.8GHz vs 2.3GHz)
Larger L3 cache size (16MB vs 2MB)
More modern manufacturing process (4nm vs 14nm)