AMD EPYC Embedded 3251 's Advantages
Released 11 years late
Higher specification of memory (DDR4-2666 vs DDR2)
Newer PCIe version (3 vs 1)
More modern manufacturing process (14nm vs 90nm)
Lower TDP (55W vs 95W)
Opteron 2220 's Advantages
Higher base frequency (2.8GHz vs 2.5GHz)