Intel Core i7 8750H 's Advantages
Higher specification of memory (2666 vs 2400)
Larger memory bandwidth (41.8GB/s vs 37.5GB/s)
Higher base frequency (2.2GHz vs 1.9GHz)
Larger L3 cache size (9MB vs 8MB)
Intel Core i7 8665U 's Advantages
Released 1 years late
Lower TDP (15W vs 45W)