Intel Xeon E5 2689 Advantages
Higher base frequency (2.6GHz vs 2.1GHz)
Lower TDP (115W vs 140W)
Intel Xeon E7 8870 v3 Advantages
Released 3 years and 3 months late
Higher specification of memory (1866 vs 1600)
Larger L3 cache size (45MB vs 20MB)
More modern manufacturing process (22nm vs 32nm)