Xeon W 1390 's Advantages
Released 3 years and 11 months late
Higher specification of memory (DDR4-3200 vs DDR4-2400)
Newer PCIe version (4 vs 3)
Higher base frequency (2.8GHz vs 2.1GHz)
Lower TDP (80W vs 120W)
AMD EPYC 7251 's Advantages
Larger L3 cache size (32MB vs 16MB)