Opteron 2220 's Advantages
Higher base frequency (2.8GHz vs 2.5GHz)
Intel Xeon E3 1565L v5 's Advantages
Released 9 years and 3 months late
Higher specification of memory (2133 vs 2)
Newer PCIe version (3 vs 1)
More modern manufacturing process (14nm vs 90nm)
Lower TDP (35W vs 95W)