Intel Xeon E7 4820 v3 's Advantages
Released 2 years and 7 months late
Higher specification of memory (1866 vs 1600)
Newer PCIe version (3 vs 2)
Larger L3 cache size (25MB vs 8MB)
More modern manufacturing process (22nm vs 32nm)
Lower TDP (115W vs 140W)
Opteron 6386 SE 's Advantages
Higher base frequency (2.8GHz vs 1.9GHz)