AMD Ryzen 3 5400U 's Advantages
Higher base frequency (2.6GHz vs 1.7GHz)
Lower TDP (25W vs 57W)
Intel Core Ultra 7 155U 's Advantages
Released 2 years and 11 months late
Higher specification of memory (7467 vs 4266)
Larger memory bandwidth (120GB/s vs 51.2GB/s)
Newer PCIe version (4.0 vs 3.0)
Larger L3 cache size (12MB vs 8MB)