Opteron 8347 HE (B3) 's Advantages
Higher specification of memory (667 vs 4)
Higher base frequency (1.9GHz vs 1.5GHz)
Lower TDP (68W vs 260W)
Intel Xeon Phi 7290F 's Advantages
Released 8 years and 1 months late
More modern manufacturing process (14nm vs 65nm)