Intel Xeon E5 1691 v3 's Advantages
Higher specification of memory (DDR4-2133 vs DDR4)
Higher base frequency (2.5GHz vs 1.5GHz)
Lower TDP (135W vs 320W)
Intel Xeon Phi 7295 's Advantages
Released 3 years and 3 months late
More modern manufacturing process (14nm vs 22nm)