Intel Xeon E5 2609 v2 's Advantages
Released 10 months late
Newer PCIe version (3 vs 2)
Higher base frequency (2.5GHz vs 2.4GHz)
Larger L3 cache size (10MB vs 8MB)
More modern manufacturing process (22nm vs 32nm)
Lower TDP (80W vs 115W)
Opteron 6378 's Advantages
Higher specification of memory (1866 vs 3)