Intel Xeon E5 1620 v3 's Advantages
Higher base frequency (3.5GHz vs 2GHz)
Lower TDP (140W vs 500W)
Xeon 6980P 's Advantages
Released 10 years late
Higher specification of memory (8800 vs 2133)
Newer PCIe version (5 vs 3)
Larger L3 cache size (504MB vs 10MB)
More modern manufacturing process (5nm vs 22nm)