Opteron 8347 HE 's Advantages
Higher base frequency (1.9GHz vs 1.866GHz)
Lower TDP (68W vs 95W)
Xeon L7555 's Advantages
Released 2 years and 6 months late
Higher specification of memory (1333 vs 667)
Larger L3 cache size (18MB vs 2MB)
More modern manufacturing process (45nm vs 65nm)