Intel Xeon E5 2620 v3 's Advantages
Higher base frequency (2.4GHz vs 2.2GHz)
Lower TDP (85W vs 205W)
Intel Xeon Gold 5520 's Advantages
Released 9 years and 3 months late
Higher specification of memory (4800 vs 1866)
Newer PCIe version (5 vs 3)
Larger L3 cache size (52.5MB vs 15MB)
More modern manufacturing process (10nm vs 22nm)