Intel Xeon E7 8891 v3 's Advantages
Higher base frequency (2.8GHz vs 2.4GHz)
Lower TDP (165W vs 225W)
Intel Xeon Platinum 8351N 's Advantages
Released 5 years and 10 months late
Higher specification of memory (2933 vs 1866)
Newer PCIe version (4 vs 3)
Larger L3 cache size (54MB vs 45MB)
More modern manufacturing process (10nm vs 22nm)