Intel Xeon E5 2620 v2 's Advantages
Lower TDP (80W vs 205W)
Intel Xeon Gold 5520 's Advantages
Released 10 years and 3 months late
Higher specification of memory (DDR5-4800 vs DDR3)
Newer PCIe version (5 vs 3)
Higher base frequency (2.2GHz vs 2.1GHz)
Larger L3 cache size (52.5MB vs 15MB)
More modern manufacturing process (10nm vs 22nm)