Intel Xeon D 1587 's Advantages
Released 3 years and 11 months late
More modern manufacturing process (14nm vs 32nm)
Lower TDP (65W vs 150W)
Intel Xeon E5 2687W 's Advantages
Higher specification of memory (DDR3 vs DDR3)
Higher base frequency (3.1GHz vs 1.7GHz)
Larger L3 cache size (20MB vs 1.5MB)