Intel Xeon E5 2643 v3 's Advantages
Released 2 years and 10 months late
Higher specification of memory (DDR4-2133 vs DDR3)
Newer PCIe version (3 vs 2)
Higher base frequency (3.4GHz vs 2.1GHz)
Larger L3 cache size (20MB vs 16MB)
Opteron 6272 's Advantages
Lower TDP (115W vs 135W)