Intel Xeon E5 2699 v3 's Advantages
Released 2 years and 6 months late
Higher specification of memory (2133 vs 1600)
Larger L3 cache size (45MB vs 20MB)
More modern manufacturing process (22nm vs 32nm)
Intel Xeon E5 2689 's Advantages
Higher base frequency (2.6GHz vs 2.3GHz)
Lower TDP (115W vs 145W)