AMD Ryzen 5 1400 's Advantages
Lower TDP (65W vs 350W)
AMD Ryzen Threadripper 7980X 's Advantages
Released 6 years and 6 months late
Higher specification of memory (DDR5-5200 vs DDR4-2666)
Larger memory bandwidth (166.4GB/s vs 39.74GB/s)
Newer PCIe version (5 vs 3.0)
Larger L3 cache size (256MB vs 8MB)
More modern manufacturing process (5nm vs 14nm)