Intel Core i5 14400 's Advantages
Lower TDP (65W vs 125W)
Intel Core i5 14600K 's Advantages
Better graphics card performance
Higher specification of memory (5600 vs 4800)
Larger memory bandwidth (89.6GB/s vs 76.8GB/s)
Higher base frequency (3.5GHz vs 2.5GHz)
Larger L3 cache size (24MB vs 20MB)