Intel Xeon E5 1620 's Advantages
Higher base frequency (3.6GHz vs 2.1GHz)
AMD EPYC 7251 's Advantages
Released 5 years and 3 months late
Higher specification of memory (2400 vs 3)
Larger L3 cache size (32MB vs 10MB)
More modern manufacturing process (14nm vs 32nm)
Lower TDP (120W vs 130W)