Xeon 6746E 's Advantages
Released 12 years and 3 months late
Higher specification of memory (5600 vs 1600)
Newer PCIe version (5 vs 3)
Larger L3 cache size (96MB vs 20MB)
More modern manufacturing process (5nm vs 32nm)
Intel Xeon E5 2689 's Advantages
Higher base frequency (2.6GHz vs 2GHz)
Lower TDP (115W vs 250W)