Opteron 6378 's Advantages
Released 8 months late
Higher specification of memory (1866 vs 3)
Intel Xeon E5 2640 's Advantages
Newer PCIe version (3 vs 2)
Higher base frequency (2.5GHz vs 2.4GHz)
Larger L3 cache size (15MB vs 8MB)
Lower TDP (95W vs 115W)