Intel Xeon E5 2650 v2 's Advantages
Higher base frequency (2.6GHz vs 1.5GHz)
Lower TDP (95W vs 245W)
Intel Xeon Phi 7290 's Advantages
Released 2 years and 9 months late
Higher specification of memory (DDR4 vs DDR3)
More modern manufacturing process (14nm vs 22nm)