Intel Core i9 12900K 's Advantages
Released 7 months late
Better graphics card performance
Higher specification of memory (DDR5-4800 vs DDR4-3200)
Larger memory bandwidth (76.8GB/s vs 50GB/s)
Newer PCIe version (5.0 vs 4.0)
Higher base frequency (32GHz vs 2.5GHz)
Larger L3 cache size (30MB vs 16MB)
More modern manufacturing process (10nm vs 14nm)
Intel Core i9 11900 's Advantages
Lower TDP (65W vs 125W)