Intel Xeon Phi 7120P 's Advantages
Higher specification of memory (DDR4 vs DDR3)
Intel Xeon E3 1515M v5 's Advantages
Released 2 years and 7 months late
Higher base frequency (2.8GHz vs 1.238GHz)
More modern manufacturing process (14nm vs 22nm)
Lower TDP (45W vs 300W)