Intel Core i9 9920X 's Advantages
Larger memory bandwidth (85GB/s vs 76.8GB/s)
Intel Core i7 12700KF 's Advantages
Released 3 years late
Higher specification of memory (4800 vs 2666)
Newer PCIe version (5.0 vs 3.0)
Higher base frequency (3.6GHz vs 3.5GHz)
Larger L3 cache size (25MB vs 19MB)
More modern manufacturing process (10nm vs 14nm)
Lower TDP (125W vs 165W)