Apple M3 's Advantages
Higher base frequency (4.05GHz vs 2.0GHz)
Larger L3 cache size (64MB vs 24MB)
Lower TDP (20W vs 28W)
Intel Core Ultra 7 255H 's Advantages
Released 1 years and 3 months late
Higher specification of memory (8400 vs 6400)
Newer PCIe version (5.0 vs 4.0)