Opteron 6386 SE 's Advantages
Released 5 years and 3 months late
Higher specification of memory (DDR3 vs DDR2)
Newer PCIe version (2 vs 1)
More modern manufacturing process (32nm vs 90nm)
Opteron 2222 's Advantages
Higher base frequency (3GHz vs 2.8GHz)
Lower TDP (95W vs 140W)