Xeon 6740E 's Advantages
Released 5 years and 11 months late
Higher specification of memory (6400 vs 2666)
Newer PCIe version (5 vs 3)
Larger L3 cache size (96MB vs 12MB)
More modern manufacturing process (5nm vs 14nm)
Xeon E 2146G 's Advantages
Higher base frequency (3.5GHz vs 2.4GHz)
Lower TDP (80W vs 250W)