Intel Xeon E5 2652 v3 's Advantages
Larger L3 cache size (25MB vs 11MB)
Lower TDP (105W vs 120W)
Intel Xeon W 2140B 's Advantages
Released 3 years and 3 months late
Higher specification of memory (2666 vs 2133)
Higher base frequency (3.2GHz vs 2.3GHz)
More modern manufacturing process (14nm vs 22nm)