Opteron 2222 's Advantages
Higher base frequency (3GHz vs 2.2GHz)
Lower TDP (95W vs 130W)
Intel Xeon E5 4620 's Advantages
Released 4 years and 9 months late
Higher specification of memory (3 vs 2)
Newer PCIe version (3 vs 1)
More modern manufacturing process (32nm vs 90nm)