Intel Xeon E5 2620 v2 's Advantages
Released 1 years and 4 months late
Newer PCIe version (3 vs 2)
Larger L3 cache size (15MB vs 8MB)
More modern manufacturing process (22nm vs 32nm)
Lower TDP (80W vs 130W)
Opteron 6281 's Advantages
Higher specification of memory (1600 vs 3)
Higher base frequency (2.5GHz vs 2.1GHz)