Xeon EC5509 's Advantages
Released 2 years and 5 months late
Higher specification of memory (1066 vs 667)
Higher base frequency (2GHz vs 1.9GHz)
Larger L3 cache size (8MB vs 2MB)
More modern manufacturing process (45nm vs 65nm)
Opteron 8347 HE 's Advantages
Lower TDP (68W vs 85W)