Intel Xeon E5 2629 v3 's Advantages
Larger L3 cache size (20MB vs 11MB)
Lower TDP (85W vs 120W)
Intel Xeon W 2140B 's Advantages
Released 3 years and 3 months late
Higher specification of memory (2666 vs 1866)
Higher base frequency (3.2GHz vs 2.4GHz)
More modern manufacturing process (14nm vs 22nm)