AMD Ryzen 9 3900XT 's Advantages
Released 1 years and 9 months late
Higher specification of memory (DDR4-3200 vs DDR4-2933)
Newer PCIe version (4.0 vs 3.0)
Higher base frequency (3.8GHz vs 3.5GHz)
Larger L3 cache size (64MB vs 32MB)
Lower TDP (105W vs 180W)
AMD Ryzen Threadripper 2920X 's Advantages
Larger memory bandwidth (87.62GB/s vs 47.68GB/s)