Intel Core i7 12700K 's Advantages
Released 2 years and 6 months late
Better graphics card performance
Higher specification of memory (4800 vs 2400)
Larger memory bandwidth (76.8GB/s vs 37.5GB/s)
Newer PCIe version (5.0 vs 3.0)
Larger L3 cache size (25MB vs 6MB)
More modern manufacturing process (10nm vs 14nm)
Intel Core i3 9100 's Advantages
Lower TDP (65W vs 125W)