Opteron 8347 HE (B3) 's Advantages
Higher specification of memory (667 vs 3)
Lower TDP (68W vs 80W)
Intel Xeon E5 2407 's Advantages
Released 4 years late
Higher base frequency (2.2GHz vs 1.9GHz)
Larger L3 cache size (10MB vs 2MB)
More modern manufacturing process (32nm vs 65nm)