Intel Xeon E5 1691 v3 's Advantages
Higher specification of memory (2133 vs 4)
Larger L3 cache size (35MB vs 16.5MB)
Xeon Platinum 8256 's Advantages
Released 4 years and 3 months late
Higher base frequency (3.8GHz vs 2.5GHz)
More modern manufacturing process (14nm vs 22nm)
Lower TDP (105W vs 135W)