Intel Xeon E3 1585 v5 's Advantages
Released 4 years and 2 months late
Higher base frequency (3.5GHz vs 2.6GHz)
More modern manufacturing process (14nm vs 32nm)
Lower TDP (65W vs 115W)
Intel Xeon E5 2689 's Advantages
Higher specification of memory (DDR3-1600 vs DDR3)
Larger L3 cache size (20MB vs 8MB)