Intel Xeon X5492 's Advantages
Higher base frequency (3.4GHz vs 3.3GHz)
Xeon E5 2667 v2 's Advantages
Released 5 years late
Higher specification of memory (3 vs 3)
Newer PCIe version (3 vs 2)
More modern manufacturing process (22nm vs 45nm)
Lower TDP (130W vs 150W)