Intel Core 5 120U 's Advantages
Lower TDP (15W vs 65W)
Intel Core Ultra 5 135H 's Advantages
Better graphics card performance
Higher specification of memory (7467 vs 6400)
Larger memory bandwidth (120GB/s vs 83.2GB/s)
Newer PCIe version (5.0 vs 4.0)
Higher base frequency (1.7GHz vs 1.4GHz)
Larger L3 cache size (18MB vs 12MB)
More modern manufacturing process (7nm vs 10nm)