Intel Xeon E5 2689 's Advantages
Higher base frequency (2.6GHz vs 2.3GHz)
Lower TDP (115W vs 145W)
Xeon 6516P B 's Advantages
Released 12 years and 11 months late
Higher specification of memory (4800 vs 1600)
Newer PCIe version (5 vs 3)
Larger L3 cache size (80MB vs 20MB)
More modern manufacturing process (5nm vs 32nm)