Opteron 2218 HE 's Advantages
Lower TDP (68W vs 135W)
Intel Xeon E5 2666 v3 's Advantages
Released 7 years and 9 months late
Higher specification of memory (2133 vs 2)
Newer PCIe version (3 vs 1)
Higher base frequency (2.9GHz vs 2.6GHz)
More modern manufacturing process (22nm vs 90nm)