Xeon 6740E 's Advantages
Released 9 years and 9 months late
Higher specification of memory (6400 vs 1866)
Newer PCIe version (5 vs 3)
Larger L3 cache size (96MB vs 10MB)
More modern manufacturing process (5nm vs 22nm)
Intel Xeon E5 1603 v3 's Advantages
Higher base frequency (2.8GHz vs 2.4GHz)
Lower TDP (140W vs 250W)