Intel Xeon W 2191B 's Advantages
Released 3 years and 3 months late
Higher specification of memory (2666 vs 2133)
Higher base frequency (2.3GHz vs 1.8GHz)
More modern manufacturing process (14nm vs 22nm)
Intel Xeon E5 2648L v3 's Advantages
Larger L3 cache size (30MB vs 24.75MB)
Lower TDP (75W vs 140W)