Opteron 8346 HE (B3) 's Advantages
Higher base frequency (1.8GHz vs 1.733GHz)
Lower TDP (68W vs 105W)
Xeon E6510 's Advantages
Released 1 years and 10 months late
Higher specification of memory (1333 vs 667)
Larger L3 cache size (12MB vs 2MB)
More modern manufacturing process (45nm vs 65nm)