Intel Xeon E5 2637 v2 's Advantages
Newer PCIe version (3 vs 2)
Higher base frequency (3.5GHz vs 2.3GHz)
Larger L3 cache size (10MB vs 8MB)
More modern manufacturing process (22nm vs 32nm)
Opteron 6338P 's Advantages
Higher specification of memory (1600 vs 3)
Lower TDP (99W vs 130W)