Intel Core i7 8550U's Advantages
Better graphics card performance
Newer PCIe version (3.0 vs 2.0)
Higher base frequency (1.8GHz vs 1.1GHz)
Intel Celeron N4120's Advantages
Released 2 years and 3 months late
Higher specification of memory (DDR4-2400 vs DDR4-2400)
Larger memory bandwidth (38.4GB/s vs 37.5GB/s)
Lower TDP (6W vs 15W)