Xeon E7 8830 's Advantages
Higher specification of memory (1333 vs 3)
Larger L3 cache size (24MB vs 20MB)
Lower TDP (105W vs 130W)
Intel Xeon E5 2667 v2 's Advantages
Released 2 years and 5 months late
Higher base frequency (3.3GHz vs 2.133GHz)
More modern manufacturing process (22nm vs 32nm)