Opteron 6168 's Advantages
Lower TDP (115W vs 120W)
Intel Xeon E5 2683 v3 's Advantages
Released 4 years and 6 months late
Higher specification of memory (2133 vs 3)
Newer PCIe version (3 vs 2)
Higher base frequency (2GHz vs 1.9GHz)
Larger L3 cache size (35MB vs 12MB)
More modern manufacturing process (22nm vs 45nm)