Intel Xeon E5 2687W v2 's Advantages
Higher base frequency (3.4GHz vs 3.2GHz)
Larger L3 cache size (20MB vs 11MB)
Intel Xeon W 2140B 's Advantages
Released 4 years and 3 months late
Higher specification of memory (2666 vs 3)
More modern manufacturing process (14nm vs 22nm)
Lower TDP (120W vs 130W)