Xeon 6740E 's Advantages
Released 10 years and 5 months late
Higher specification of memory (6400 vs 1600)
Newer PCIe version (5 vs 2)
Higher base frequency (2.4GHz vs 2.3GHz)
Larger L3 cache size (96MB vs 8MB)
More modern manufacturing process (5nm vs 32nm)
Opteron 6338P 's Advantages
Lower TDP (99W vs 250W)