Xeon EC5549 's Advantages
Higher base frequency (2.533GHz vs 2.2GHz)
Lower TDP (85W vs 270W)
Intel Xeon Gold 6554S 's Advantages
Released 13 years and 10 months late
Higher specification of memory (5200 vs 1333)
Newer PCIe version (5 vs 2)
Larger L3 cache size (180MB vs 8MB)
More modern manufacturing process (10nm vs 45nm)