Opteron 3320 EE 's Advantages
Lower TDP (25W vs 84W)
Intel Xeon E3 1275 v3 's Advantages
Released 6 months late
Higher specification of memory (4 vs 3)
Newer PCIe version (3 vs 2)
Higher base frequency (3.5GHz vs 1.9GHz)
More modern manufacturing process (22nm vs 32nm)