Opteron 2218 HE 's Advantages
Lower TDP (68W vs 130W)
Intel Xeon X5647 's Advantages
Released 4 years late
Higher specification of memory (3 vs 2)
Newer PCIe version (2 vs 1)
Higher base frequency (2.933GHz vs 2.6GHz)
More modern manufacturing process (32nm vs 90nm)