AMD Ryzen 5 3400G 's Advantages
Better graphics card performance
Lower TDP (65W vs 125W)
Intel Core i5 12600K 's Advantages
Released 2 years and 3 months late
Higher specification of memory (4800 vs 2933)
Larger memory bandwidth (76.8GB/s vs 43.71GB/s)
Newer PCIe version (5.0 vs 3.0)
Larger L3 cache size (20MB vs 4MB)
More modern manufacturing process (10nm vs 12nm)