Intel Core i7 8665U 's Advantages
Released 2 years and 8 months late
Higher specification of memory (DDR4-2400 vs DDR4-2133)
Larger memory bandwidth (37.5GB/s vs 34.1GB/s)
Larger L3 cache size (8MB vs 4MB)
Intel Core i7 7500U 's Advantages
Better graphics card performance
Higher base frequency (2.7GHz vs 1.9GHz)