Intel Xeon W 2191B 's Advantages
Released 7 years and 10 months late
Higher specification of memory (2666 vs 1333)
Newer PCIe version (3 vs 2)
Larger L3 cache size (24.75MB vs 8MB)
More modern manufacturing process (14nm vs 45nm)
Xeon EC5549 's Advantages
Higher base frequency (2.533GHz vs 2.3GHz)
Lower TDP (85W vs 140W)