Intel Core i5 9600K 's Advantages
Higher base frequency (3.7GHz vs 3.4GHz)
Lower TDP (95W vs 125W)
Intel Core i7 14700K 's Advantages
Released 5 years late
Better graphics card performance
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)
Larger L3 cache size (33MB vs 9MB)
More modern manufacturing process (10nm vs 14nm)