Opteron 6376 's Advantages
Released 8 months late
Higher specification of memory (1866 vs 3)
Lower TDP (115W vs 130W)
Intel Xeon E5 1620 's Advantages
Newer PCIe version (3 vs 2)
Higher base frequency (3.6GHz vs 2.3GHz)
Larger L3 cache size (10MB vs 8MB)