Xeon 6740E 's Advantages
Released 9 years late
Higher specification of memory (6400 vs 1866)
Newer PCIe version (5 vs 3)
Higher base frequency (2.4GHz vs 2GHz)
Larger L3 cache size (96MB vs 25MB)
More modern manufacturing process (5nm vs 22nm)
Intel Xeon E5 4620 v3 's Advantages
Lower TDP (105W vs 250W)