Intel Xeon E5 1680 v2 's Advantages
Released 5 years late
Higher specification of memory (1866 vs 3)
Newer PCIe version (3 vs 2)
More modern manufacturing process (22nm vs 45nm)
Lower TDP (130W vs 150W)
Intel Xeon X5492 's Advantages
Higher base frequency (3.4GHz vs 3GHz)