Xeon E7 4860 's Advantages
Lower TDP (130W vs 140W)
Intel Xeon W 2191B 's Advantages
Released 6 years and 8 months late
Higher specification of memory (2666 vs 1333)
Higher base frequency (2.3GHz vs 2.266GHz)
Larger L3 cache size (24.75MB vs 24MB)
More modern manufacturing process (14nm vs 32nm)