Opteron 8218 HE 's Advantages
Lower TDP (68W vs 360W)
AMD EPYC Embedded 9554 's Advantages
Released 16 years and 1 months late
Higher specification of memory (DDR5-4800 vs DDR2-667)
Newer PCIe version (5 vs 1)
Higher base frequency (3.1GHz vs 2.6GHz)
More modern manufacturing process (5nm vs 90nm)