Intel Core i9 13900KF 's Advantages
Released 3 years and 8 months late
Higher specification of memory (5600 vs 2666)
Larger memory bandwidth (89.6GB/s vs 41.6GB/s)
Newer PCIe version (5.0 vs 3.0)
Higher base frequency (3.0GHz vs 2.9GHz)
Larger L3 cache size (36MB vs 9MB)
More modern manufacturing process (10nm vs 14nm)
Intel Core i5 9400 's Advantages
Integrated graphics card
Lower TDP (65W vs 125W)