Intel Xeon E5 2640 v2 's Advantages
Lower TDP (95W vs 140W)
Intel Xeon W 2195 's Advantages
Released 3 years and 11 months late
Higher specification of memory (2666 vs 3)
Higher base frequency (2.3GHz vs 2GHz)
Larger L3 cache size (24.75MB vs 20MB)
More modern manufacturing process (14nm vs 22nm)