Intel Xeon W 2191B 's Advantages
Released 3 years and 3 months late
Higher specification of memory (2666 vs 2133)
Larger L3 cache size (24.75MB vs 15MB)
More modern manufacturing process (14nm vs 22nm)
Intel Xeon E5 2637 v3 's Advantages
Higher base frequency (3.5GHz vs 2.3GHz)
Lower TDP (135W vs 140W)