Intel Core i7 1355U 's Advantages
Released 11 months late
Better graphics card performance
Higher specification of memory (6400 vs 5200)
Larger memory bandwidth (89.6GB/s vs 76.8GB/s)
Higher base frequency (1.7GHz vs 1.1GHz)
Intel Core i5 1240U 's Advantages
Lower TDP (9W vs 15W)