Intel Core i3 5010U 's Advantages
Higher base frequency (2.1GHz vs 1.2GHz)
Lower TDP (15W vs 20W)
Intel Core Ultra 5 125H 's Advantages
Released 8 years and 11 months late
Higher specification of memory (LPDDR5-7467 vs DDR3L-1600)
Larger memory bandwidth (120GB/s vs 25.6GB/s)
Newer PCIe version (5.0 vs 2.0)
Larger L3 cache size (18MB vs 3MB)
More modern manufacturing process (7nm vs 14nm)