Opteron 4310 EE 's Advantages
Higher specification of memory (1600 vs 3)
Higher base frequency (2.2GHz vs 2.1GHz)
Lower TDP (35W vs 80W)
Intel Xeon E5 2620 v2 's Advantages
Released 9 months late
Newer PCIe version (3 vs 2)
Larger L3 cache size (15MB vs 8MB)
More modern manufacturing process (22nm vs 32nm)