AMD Ryzen 5 8640HS 's Advantages
Better graphics card performance
Higher specification of memory (LPDDR5x-7500 vs LPDDR5-7467)
Higher base frequency (3.5GHz vs 1.7GHz)
Larger L3 cache size (16MB vs 12MB)
Intel Core Ultra 5 125U 's Advantages
Larger memory bandwidth (120GB/s vs 89.6GB/s)
Lower TDP (12W vs 28W)