AMD Ryzen 7 5800 's Advantages
Larger memory bandwidth (51.2GB/s vs 47.68GB/s)
Higher base frequency (3.4GHz vs 3.3GHz)
Lower TDP (65W vs 105W)
AMD Ryzen 9 5900XT 's Advantages
Released 3 years and 6 months late
Newer PCIe version (4 vs 4.0)
Larger L3 cache size (64MB vs 32MB)