Xeon 6731E 's Advantages
Released 9 years late
Higher specification of memory (5600 vs 1866)
Newer PCIe version (5 vs 3)
Higher base frequency (2.2GHz vs 2.1GHz)
Larger L3 cache size (96MB vs 45MB)
More modern manufacturing process (5nm vs 22nm)
Intel Xeon E7 8870 v3 's Advantages
Lower TDP (140W vs 250W)