Intel Core 5 220U 's Advantages
Lower TDP (15W vs 28W)
Intel Core Ultra 7 255H 's Advantages
Released 124 years late
Integrated graphics card
Higher specification of memory (8400 vs 5200)
Newer PCIe version (5.0 vs 4)
Higher base frequency (2.0GHz vs 1.5GHz)
Larger L3 cache size (24MB vs 12MB)
More modern manufacturing process (3nm vs 10nm)