Intel Core i5 6500 's Advantages
Higher base frequency (3.2GHz vs 2.9GHz)
Intel Core i5 12500E 's Advantages
Released 6 years and 4 months late
Higher specification of memory (4800 vs 2133)
Larger memory bandwidth (76.8GB/s vs 34.1GB/s)
Newer PCIe version (5 vs 3.0)
Larger L3 cache size (18MB vs 6MB)
More modern manufacturing process (10nm vs 14nm)