Intel Core i7 8665U 's Advantages
Lower TDP (15W vs 20W)
Intel Core i5 1350P 's Advantages
Released 3 years and 9 months late
Better graphics card performance
Higher specification of memory (LPDDR5-6400 vs DDR4-2400)
Larger memory bandwidth (89.6GB/s vs 37.5GB/s)
Newer PCIe version (4.0 vs 3.0)
Larger L3 cache size (12MB vs 8MB)
More modern manufacturing process (10nm vs 14nm)