Intel Xeon E5 2640 v3 's Advantages
Released 2 years and 6 months late
Higher specification of memory (DDR4-1866 vs DDR3)
More modern manufacturing process (22nm vs 32nm)
Lower TDP (90W vs 150W)
Intel Xeon E5 2687W 's Advantages
Higher base frequency (3.1GHz vs 2.6GHz)