Intel Pentium Gold 5405U 's Advantages
Higher base frequency (2.3GHz vs 1.2GHz)
Lower TDP (15W vs 20W)
Intel Core Ultra 5 125H 's Advantages
Released 4 years and 11 months late
Better graphics card performance
Higher specification of memory (LPDDR5-7467 vs DDR4-2133)
Larger memory bandwidth (120GB/s vs 37.5GB/s)
Newer PCIe version (5.0 vs 2.0)
Larger L3 cache size (18MB vs 2MB)
More modern manufacturing process (7nm vs 14nm)