Opteron 1389 's Advantages
Higher specification of memory (1333 vs 3)
Higher base frequency (2.9GHz vs 2.6GHz)
Intel Xeon E5 2650 v2 's Advantages
Released 4 years and 3 months late
Newer PCIe version (3 vs 2)
Larger L3 cache size (20MB vs 6MB)
More modern manufacturing process (22nm vs 45nm)
Lower TDP (95W vs 115W)