Xeon EC5539 's Advantages
Higher base frequency (2.266GHz vs 1.9GHz)
Lower TDP (65W vs 80W)
AMD EPYC Embedded 3351 's Advantages
Released 8 years late
Higher specification of memory (2666 vs 1333)
Newer PCIe version (3 vs 2)
Larger L3 cache size (32MB vs 4MB)
More modern manufacturing process (14nm vs 45nm)