AMD EPYC 7551 's Advantages
Released 9 years and 10 months late
Higher specification of memory (2666 vs 667)
Newer PCIe version (3 vs 1)
More modern manufacturing process (14nm vs 90nm)
Opteron 8222 's Advantages
Higher base frequency (3GHz vs 2GHz)
Lower TDP (95W vs 180W)