Intel Xeon E5640 's Advantages
Higher base frequency (2.666GHz vs 2.4GHz)
Lower TDP (80W vs 225W)
Intel Xeon Platinum 8351N 's Advantages
Released 11 years and 1 months late
Higher specification of memory (2933 vs 3)
Newer PCIe version (4 vs 2)
Larger L3 cache size (54MB vs 12MB)
More modern manufacturing process (10nm vs 32nm)