AMD EPYC Embedded 3451 's Advantages
Higher base frequency (2.15GHz vs 2GHz)
Lower TDP (100W vs 240W)
AMD EPYC 7663P 's Advantages
Released 5 years and 7 months late
Higher specification of memory (DDR4-3200 vs DDR4-2666)
Newer PCIe version (4 vs 3)
Larger L3 cache size (256MB vs 32MB)
More modern manufacturing process (7nm vs 14nm)