Intel Core i5 8257U 's Advantages
Released 6 months late
Larger memory bandwidth (37.5GB/s vs 35.76GB/s)
Larger L3 cache size (6MB vs 4MB)
AMD Ryzen 5 3500U 's Advantages
Better graphics card performance
Higher specification of memory (DDR4-2400 vs DDR4-2400)
Higher base frequency (2.1GHz vs 1.4GHz)
Lower TDP (12W vs 15W)