Xeon E5 2650 v4 's Advantages
Released 4 years late
Higher specification of memory (2133 vs 1600)
Larger L3 cache size (30MB vs 20MB)
More modern manufacturing process (14nm vs 32nm)
Lower TDP (105W vs 115W)
Intel Xeon E5 2689 's Advantages
Higher base frequency (2.6GHz vs 2.2GHz)