Intel Core i3 1305U 's Advantages
Higher base frequency (1.6GHz vs 1.2GHz)
Lower TDP (12W vs 20W)
Intel Core Ultra 5 125H 's Advantages
Released 11 months late
Better graphics card performance
Higher specification of memory (LPDDR5-7467 vs DDR5-5200)
Larger memory bandwidth (120GB/s vs 76.8GB/s)
Newer PCIe version (5.0 vs 4.0)
Larger L3 cache size (18MB vs 10MB)
More modern manufacturing process (7nm vs 10nm)