Intel Core i7 7700 's Advantages
Integrated graphics card
Higher base frequency (3.6GHz vs 2.6GHz)
Lower TDP (65W vs 165W)
Intel Core i9 7980XE 's Advantages
Released 8 months late
Higher specification of memory (2666 vs 2400)
Larger memory bandwidth (79.47GB/s vs 35.76GB/s)
Larger L3 cache size (25MB vs 8MB)