Xeon X3470 's Advantages
Higher base frequency (2.933GHz vs 2.15GHz)
Lower TDP (95W vs 100W)
AMD EPYC Embedded 3451 's Advantages
Released 8 years and 5 months late
Higher specification of memory (2666 vs 1333)
Newer PCIe version (3 vs 2)
Larger L3 cache size (32MB vs 8MB)
More modern manufacturing process (14nm vs 45nm)