Opteron 8346 HE (B3) 's Advantages
Higher specification of memory (667 vs 3)
Lower TDP (68W vs 130W)
Intel Xeon E5 1660 's Advantages
Released 3 years and 10 months late
Higher base frequency (3.3GHz vs 1.8GHz)
Larger L3 cache size (15MB vs 2MB)
More modern manufacturing process (32nm vs 65nm)