Xeon 6731E 's Advantages
Released 11 years late
Higher specification of memory (5600 vs 1600)
Newer PCIe version (5 vs 3)
Larger L3 cache size (96MB vs 8MB)
More modern manufacturing process (5nm vs 22nm)
Intel Xeon E3 1225 v3 's Advantages
Higher base frequency (3.2GHz vs 2.2GHz)
Lower TDP (84W vs 250W)