Intel Core i7 8700 's Advantages
Released 9 months late
Higher specification of memory (DDR4-2666 vs DDR4-2400)
Larger memory bandwidth (41.6GB/s vs 35.76GB/s)
Larger L3 cache size (12MB vs 8MB)
Intel Core i7 7700 's Advantages
Better graphics card performance
Higher base frequency (3.6GHz vs 3.2GHz)