Intel Xeon E5 2689 's Advantages
Higher base frequency (2.6GHz vs 2.5GHz)
Lower TDP (115W vs 235W)
Xeon 6706P B 's Advantages
Released 12 years and 11 months late
Higher specification of memory (6400 vs 1600)
Newer PCIe version (5 vs 3)
Larger L3 cache size (160MB vs 20MB)
More modern manufacturing process (5nm vs 32nm)