Opteron 2222 's Advantages
Higher base frequency (3GHz vs 2.4GHz)
Xeon E5530 's Advantages
Released 1 years and 7 months late
Higher specification of memory (1066 vs 2)
Newer PCIe version (2 vs 1)
More modern manufacturing process (45nm vs 90nm)
Lower TDP (80W vs 95W)