AMD Ryzen 5 7640HS 's Advantages
Better graphics card performance
Higher specification of memory (LPDDR5x-7500 vs LPDDR5-7467)
Higher base frequency (4.3GHz vs 1.7GHz)
Larger L3 cache size (16MB vs 12MB)
Intel Core Ultra 7 155U 's Advantages
Released 11 months late
Larger memory bandwidth (120GB/s vs 89.6GB/s)
Lower TDP (12W vs 35W)