Intel Xeon E5 1620 v3 's Advantages
Released 5 years and 3 months late
Higher specification of memory (2133 vs 1333)
Newer PCIe version (3 vs 2)
Higher base frequency (3.5GHz vs 2.9GHz)
Larger L3 cache size (10MB vs 6MB)
More modern manufacturing process (22nm vs 45nm)
Opteron 1389 's Advantages
Lower TDP (115W vs 140W)