Intel Xeon E5 2665 's Advantages
Higher base frequency (2.4GHz vs 2.2GHz)
Lower TDP (115W vs 270W)
Intel Xeon Gold 6554S 's Advantages
Released 11 years and 9 months late
Higher specification of memory (5200 vs 3)
Newer PCIe version (5 vs 3)
Larger L3 cache size (180MB vs 20MB)
More modern manufacturing process (10nm vs 32nm)