Intel Core i9 11900 's Advantages
Integrated graphics card
Lower TDP (65W vs 105W)
AMD Ryzen 5 5600X3D 's Advantages
Released 2 years and 4 months late
Larger memory bandwidth (51.2GB/s vs 50GB/s)
Newer PCIe version (4 vs 4.0)
Higher base frequency (3.3GHz vs 2.5GHz)
Larger L3 cache size (96MB vs 16MB)
More modern manufacturing process (7nm vs 14nm)