Xeon 6740E 's Advantages
Released 6 years and 6 months late
Higher specification of memory (6400 vs 2666)
Newer PCIe version (5 vs 3)
Larger L3 cache size (96MB vs 11MB)
More modern manufacturing process (5nm vs 14nm)
Intel Xeon W 2140B 's Advantages
Higher base frequency (3.2GHz vs 2.4GHz)
Lower TDP (120W vs 250W)