Opteron 3320 EE 's Advantages
Lower TDP (25W vs 55W)
AMD EPYC Embedded 3251 's Advantages
Released 5 years and 2 months late
Higher specification of memory (DDR4-2666 vs DDR3)
Newer PCIe version (3 vs 2)
Higher base frequency (2.5GHz vs 1.9GHz)
Larger L3 cache size (16MB vs 8MB)
More modern manufacturing process (14nm vs 32nm)