Opteron 8347 HE 's Advantages
Higher specification of memory (667 vs 3)
Lower TDP (68W vs 80W)
Intel Xeon E5507 's Advantages
Released 2 years and 6 months late
Higher base frequency (2.266GHz vs 1.9GHz)
Larger L3 cache size (4MB vs 2MB)
More modern manufacturing process (45nm vs 65nm)