Intel Core i9 9900K 's Advantages
Higher base frequency (3.6GHz vs 2.0GHz)
Intel Core i9 13900 's Advantages
Released 4 years and 3 months late
Better graphics card performance
Higher specification of memory (DDR5-5600 vs DDR4-2666)
Larger memory bandwidth (89.6GB/s vs 41.6GB/s)
Newer PCIe version (5.0 vs 3.0)
Larger L3 cache size (36MB vs 16MB)
More modern manufacturing process (10nm vs 14nm)
Lower TDP (65W vs 95W)