Intel Celeron N3350's Advantages
Higher specification of memory (LPDDR4-2400 vs DDR4-2400)
Lower TDP (6W vs 15W)
Intel Core i7 8557U's Advantages
Released 2 years and 11 months late
Better graphics card performance
Larger memory bandwidth (37.5GB/s vs 29.9GB/s)
Newer PCIe version (3.0 vs 2.0)
Higher base frequency (1.7GHz vs 1.1GHz)