Intel Xeon E7 4820 v3 's Advantages
Released 8 years and 4 months late
Higher specification of memory (1866 vs 2)
Newer PCIe version (3 vs 1)
More modern manufacturing process (22nm vs 90nm)
Opteron 2220 's Advantages
Higher base frequency (2.8GHz vs 1.9GHz)
Lower TDP (95W vs 115W)