AMD EPYC 7251 's Advantages
Released 9 years and 10 months late
Higher specification of memory (2400 vs 2)
Newer PCIe version (3 vs 1)
More modern manufacturing process (14nm vs 90nm)
Opteron 2222 's Advantages
Higher base frequency (3GHz vs 2.1GHz)
Lower TDP (95W vs 120W)