Intel Core i5 8400H 's Advantages
Released 8 months late
Higher specification of memory (DDR4-2666 vs DDR4-2400)
Larger memory bandwidth (41.8GB/s vs 37.5GB/s)
Higher base frequency (2.5GHz vs 1.8GHz)
Intel Core i7 8550U 's Advantages
Lower TDP (15W vs 45W)