Intel Core i5 13420H Advantages
Newer PCIe version (5.0 vs 4.0)
Higher base frequency (2.1GHz vs 1.4GHz)
Intel Core 5 120U Advantages
Released 1 years late
Better graphics card performance
Higher specification of memory (LPDDR5-6400 vs DDR5-5200)
Larger memory bandwidth (83.2GB/s vs 76.8GB/s)
Lower TDP (12W vs 35W)