Intel Core i9 9900X 's Advantages
Higher base frequency (3.5GHz vs 2.7GHz)
Intel Core i5 14600 's Advantages
Released 5 years and 3 months late
Integrated graphics card
Higher specification of memory (DDR5-5600 vs DDR4-2666)
Larger memory bandwidth (89.6GB/s vs 85GB/s)
Newer PCIe version (5.0 vs 3.0)
Larger L3 cache size (24MB vs 20MB)
More modern manufacturing process (10nm vs 14nm)
Lower TDP (65W vs 165W)