Opteron 6378 's Advantages
Higher specification of memory (1866 vs 3)
Higher base frequency (2.4GHz vs 2.1GHz)
Intel Xeon E5 2620 v2 's Advantages
Released 10 months late
Newer PCIe version (3 vs 2)
Larger L3 cache size (15MB vs 8MB)
More modern manufacturing process (22nm vs 32nm)
Lower TDP (80W vs 115W)