Intel Core i5 8257U 's Advantages
Better graphics card performance
Lower TDP (15W vs 25W)
Intel Core i5 10310U 's Advantages
Released 10 months late
Higher specification of memory (2933 vs 2400)
Larger memory bandwidth (45.8GB/s vs 37.5GB/s)
Higher base frequency (2.2GHz vs 1.4GHz)