Intel Core i9 9900KS 's Advantages
Integrated graphics card
Higher base frequency (4.0GHz vs 3.2GHz)
Intel Core i9 12900KF 's Advantages
Released 2 years late
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 (30MB vs 16MB)
More modern manufacturing process (10nm vs 14nm)
Lower TDP (125W vs 127W)