AMD Ryzen 9 5900X 's Advantages
Higher base frequency (3.7GHz vs 3.2GHz)
Lower TDP (105W vs 350W)
AMD Ryzen Threadripper 7980X 's Advantages
Released 3 years late
Higher specification of memory (DDR5-5200 vs DDR4-3200)
Larger memory bandwidth (166.4GB/s vs 47.68GB/s)
Newer PCIe version (5 vs 4.0)
Larger L3 cache size (256MB vs 64MB)