Intel Xeon E5 2667 's Advantages
Higher base frequency (2.9GHz vs 2.4GHz)
Intel Xeon E5 2676 v3 's Advantages
Released 3 years and 3 months late
Higher specification of memory (DDR3 vs DDR3)
Larger L3 cache size (30MB vs 15MB)
More modern manufacturing process (22nm vs 32nm)
Lower TDP (120W vs 130W)