Opteron 4340 's Advantages
Released 4 years and 7 months late
Higher base frequency (3.5GHz vs 1.9GHz)
Larger L3 cache size (8MB vs 2MB)
More modern manufacturing process (32nm vs 65nm)
Opteron 8347 HE (B3) 's Advantages
Higher specification of memory (667 vs 3)
Lower TDP (68W vs 95W)