Opteron 8347 HE 's Advantages
Higher base frequency (1.9GHz vs 1.733GHz)
Lower TDP (68W vs 105W)
Xeon E7 2803 's Advantages
Released 3 years and 7 months late
Higher specification of memory (1333 vs 667)
Larger L3 cache size (18MB vs 2MB)
More modern manufacturing process (32nm vs 65nm)