Intel Xeon E5 4640 's Advantages
Lower TDP (95W vs 150W)
Intel Xeon Gold 5415 's Advantages
Released 10 years and 8 months late
Higher specification of memory (4400 vs 3)
Newer PCIe version (5 vs 3)
Higher base frequency (2.9GHz vs 2.4GHz)
Larger L3 cache size (22.5MB vs 20MB)
More modern manufacturing process (10nm vs 32nm)