Intel Xeon X5492 's Advantages
Higher base frequency (3.4GHz vs 2.4GHz)
Intel Xeon E5 2629 v3 's Advantages
Released 6 years late
Higher specification of memory (DDR3 vs DDR2)
Newer PCIe version (3 vs 2)
More modern manufacturing process (22nm vs 45nm)
Lower TDP (85W vs 150W)