AMD Ryzen Threadripper 2920X's Advantages
Released 1 years and 6 months late
Higher specification of memory (DDR4-2933 vs DDR4-2666)
Larger memory bandwidth (87.62GB/s vs 39.74GB/s)
Higher base frequency (3.5GHz vs 3.2GHz)
Larger L3 cache size (32MB vs 8MB)
More modern manufacturing process (12nm vs 14nm)
AMD Ryzen 5 1400's Advantages
Lower TDP (65W vs 180W)