Intel Xeon W 2140B 's Advantages
Released 3 years and 3 months late
Higher specification of memory (DDR4-2666 vs DDR3)
Higher base frequency (3.2GHz vs 2.3GHz)
More modern manufacturing process (14nm vs 22nm)
Intel Xeon E5 2670 v3 's Advantages
Larger L3 cache size (30MB vs 11MB)