Opteron 6380 's Advantages
Released 5 years and 9 months late
Higher specification of memory (DDR3 vs DDR2-667)
Newer PCIe version (2 vs 1)
More modern manufacturing process (32nm vs 90nm)
Opteron 8218 HE 's Advantages
Higher base frequency (2.6GHz vs 2.5GHz)
Lower TDP (68W vs 115W)