Intel Xeon E5 1691 v3 's Advantages
Released 7 years and 7 months late
Higher specification of memory (2133 vs 667)
Newer PCIe version (3 vs 1)
More modern manufacturing process (22nm vs 90nm)
Opteron 8220 's Advantages
Higher base frequency (2.8GHz vs 2.5GHz)
Lower TDP (95W vs 135W)