Intel Xeon E5 1620 v3 's Advantages
Higher base frequency (3.5GHz vs 3.2GHz)
Intel Xeon W 2140B 's Advantages
Released 3 years and 3 months late
Higher specification of memory (2666 vs 2133)
Larger L3 cache size (11MB vs 10MB)
More modern manufacturing process (14nm vs 22nm)
Lower TDP (120W vs 140W)