Intel Core i7 7800X 's Advantages
Larger memory bandwidth (79.47GB/s vs 76.8GB/s)
Intel Core i7 12700KF 's Advantages
Released 4 years and 5 months late
Higher specification of memory (4800 vs 2400)
Newer PCIe version (5.0 vs 3.0)
Higher base frequency (3.6GHz vs 3.5GHz)
Larger L3 cache size (25MB vs 8MB)
More modern manufacturing process (10nm vs 14nm)
Lower TDP (125W vs 140W)