Intel Xeon X5492 's Advantages
Higher base frequency (3.4GHz vs 2.3GHz)
Intel Xeon E5 2669 v3 's Advantages
Released 6 years and 4 months late
Higher specification of memory (2133 vs 3)
Newer PCIe version (3 vs 2)
More modern manufacturing process (22nm vs 45nm)
Lower TDP (120W vs 150W)