Intel Core i7 1250U 's Advantages
Better graphics card performance
Lower TDP (9W vs 15W)
Intel Core i5 1334U 's Advantages
Released 11 months late
Higher specification of memory (5200 vs 5200)
Larger memory bandwidth (89.6GB/s vs 76.8GB/s)
Higher base frequency (1.3GHz vs 1.1GHz)