Xeon E6540 's Advantages
Lower TDP (105W vs 200W)
AMD EPYC Embedded 9254 's Advantages
Released 13 years late
Higher specification of memory (4800 vs 1333)
Newer PCIe version (5 vs 2)
Higher base frequency (2.9GHz vs 2GHz)
Larger L3 cache size (128MB vs 18MB)
More modern manufacturing process (5nm vs 45nm)