Intel Xeon E3 1285 v4 's Advantages
Higher base frequency (3.5GHz vs 2.3GHz)
Lower TDP (95W vs 140W)
Intel Xeon W 2191B 's Advantages
Released 2 years and 6 months late
Higher specification of memory (2666 vs 1866)
Larger L3 cache size (24.75MB vs 6MB)