Intel Xeon E5 4660 v3 's Advantages
Larger L3 cache size (35MB vs 11MB)
Intel Xeon W 2140B 's Advantages
Released 2 years and 6 months late
Higher specification of memory (2666 vs 2133)
Higher base frequency (3.2GHz vs 2.1GHz)
More modern manufacturing process (14nm vs 22nm)