Opteron 2222 's Advantages
Higher base frequency (3GHz vs 2.266GHz)
Intel Xeon E5607 's Advantages
Released 3 years and 6 months late
Higher specification of memory (3 vs 2)
Newer PCIe version (2 vs 1)
More modern manufacturing process (32nm vs 90nm)
Lower TDP (80W vs 95W)