Intel Core i9 12900 's Advantages
Larger L3 cache size (30MB vs 20MB)
Lower TDP (65W vs 125W)
Intel Core i5 12600K 's Advantages
Integrated graphics card
Higher specification of memory (DDR5-4800 vs DDR5-4800)
Newer PCIe version (5.0 vs 5)
Higher base frequency (3.7GHz vs 2.4GHz)