Intel Core i9 10900 's Advantages
Larger L3 cache size (20MB vs 16MB)
Lower TDP (65W vs 125W)
Intel Core i9 11900K 's Advantages
Released 10 months late
Better graphics card performance
Higher specification of memory (DDR4-3200 vs DDR4-2933)
Larger memory bandwidth (50GB/s vs 45.8GB/s)
Newer PCIe version (4.0 vs 3.0)
Higher base frequency (3.5GHz vs 2.8GHz)