Opteron 2220 's Advantages
Higher base frequency (2.8GHz vs 2.4GHz)
Intel Xeon E3 1260L 's Advantages
Released 4 years and 2 months late
Higher specification of memory (3 vs 2)
Newer PCIe version (3 vs 1)
More modern manufacturing process (32nm vs 90nm)
Lower TDP (45W vs 95W)