Intel Xeon W 2191B 's Advantages
Released 5 years and 1 months late
Higher specification of memory (2666 vs 1866)
Newer PCIe version (3 vs 2)
Larger L3 cache size (24.75MB vs 8MB)
More modern manufacturing process (14nm vs 32nm)
Opteron 6378 's Advantages
Higher base frequency (2.4GHz vs 2.3GHz)
Lower TDP (115W vs 140W)