Intel Core i5 10400F 's Advantages
Lower TDP (65W vs 125W)
Intel Core i9 11900K 's Advantages
Released 10 months late
Integrated graphics card
Higher specification of memory (3200 vs 2666)
Larger memory bandwidth (50GB/s vs 41.6GB/s)
Newer PCIe version (4.0 vs 3.0)
Higher base frequency (3.5GHz vs 2.9GHz)
Larger L3 cache size (16MB vs 12MB)