Opteron 2222 's Advantages
Higher base frequency (3GHz vs 2.4GHz)
Xeon L5645 's Advantages
Released 3 years and 6 months late
Higher specification of memory (1333 vs 2)
Newer PCIe version (2 vs 1)
More modern manufacturing process (32nm vs 90nm)
Lower TDP (60W vs 95W)