Intel Core i7 8086K 's Advantages
Higher base frequency (4.0GHz vs 3.3GHz)
Intel Core i5 12600 's Advantages
Released 3 years and 7 months late
Better graphics card performance
Higher specification of memory (DDR5-4800 vs DDR4-2666)
Larger memory bandwidth (76.8GB/s vs 41.6GB/s)
Newer PCIe version (5.0 vs 3.0)
Larger L3 cache size (18MB vs 12MB)
More modern manufacturing process (10nm vs 14nm)
Lower TDP (65W vs 95W)