Opteron 6348 's Advantages
Released 8 months late
Higher specification of memory (1866 vs 3)
Larger L3 cache size (8MB vs 5MB)
Intel Xeon E5 2637 's Advantages
Newer PCIe version (3 vs 2)
Higher base frequency (3GHz vs 2.8GHz)
Lower TDP (80W vs 115W)