Intel Core i7 13700 's Advantages
Released 7 years and 4 months late
Higher specification of memory (DDR5-5600 vs DDR4-2133)
Larger memory bandwidth (89.6GB/s vs 34.1GB/s)
Newer PCIe version (5.0 vs 3.0)
Larger L3 cache size (30MB vs 6MB)
More modern manufacturing process (10nm vs 14nm)
Intel Core i5 6400 's Advantages
Higher base frequency (2.7GHz vs 2.1GHz)