Opteron 2222 SE 's Advantages
Higher base frequency (3GHz vs 2.5GHz)
Opteron 1381 's Advantages
Released 2 years and 2 months late
Higher specification of memory (1333 vs 2)
Newer PCIe version (2 vs 1)
More modern manufacturing process (45nm vs 90nm)
Lower TDP (115W vs 119W)