Opteron 6328 's Advantages
Higher base frequency (3.2GHz vs 2.5GHz)
AMD EPYC Embedded 3251 's Advantages
Released 5 years and 3 months late
Higher specification of memory (2666 vs 1866)
Newer PCIe version (3 vs 2)
Larger L3 cache size (16MB vs 8MB)
More modern manufacturing process (14nm vs 32nm)
Lower TDP (55W vs 115W)