Intel Xeon W 2191B 's Advantages
Released 5 years and 9 months late
Higher specification of memory (2666 vs 3)
Larger L3 cache size (24.75MB vs 20MB)
More modern manufacturing process (14nm vs 32nm)
Lower TDP (140W vs 150W)
Intel Xeon E5 2687W 's Advantages
Higher base frequency (3.1GHz vs 2.3GHz)