Opteron 6274 's Advantages
Higher base frequency (2.2GHz vs 2.1GHz)
Intel Xeon E7 4830 v3 's Advantages
Released 3 years and 7 months late
Higher specification of memory (1866 vs 3)
Newer PCIe version (3 vs 2)
Larger L3 cache size (30MB vs 16MB)
More modern manufacturing process (22nm vs 32nm)