Intel Xeon E5 2620 v3 's Advantages
Released 5 years and 3 months late
Higher specification of memory (1866 vs 1333)
Newer PCIe version (3 vs 2)
Larger L3 cache size (15MB vs 6MB)
More modern manufacturing process (22nm vs 45nm)
Lower TDP (85W vs 115W)
Opteron 1381 's Advantages
Higher base frequency (2.5GHz vs 2.4GHz)