Intel Core i7 7820X 's Advantages
Larger memory bandwidth (79.47GB/s vs 50GB/s)
Higher base frequency (3.6GHz vs 2.5GHz)
Intel Core i9 11900F 's Advantages
Released 3 years and 10 months late
Higher specification of memory (3200 vs 2666)
Newer PCIe version (4.0 vs 3.0)
Larger L3 cache size (16MB vs 11MB)
Lower TDP (65W vs 140W)