Intel Xeon E5 4620 v3 's Advantages
Lower TDP (105W vs 205W)
Intel Xeon Gold 5520 's Advantages
Released 8 years and 6 months late
Higher specification of memory (4800 vs 1866)
Newer PCIe version (5 vs 3)
Higher base frequency (2.2GHz vs 2GHz)
Larger L3 cache size (52.5MB vs 25MB)
More modern manufacturing process (10nm vs 22nm)