Intel Xeon E5 2658 's Advantages
Lower TDP (95W vs 165W)
Intel Xeon Gold 5515 's Advantages
Released 11 years and 9 months late
Higher specification of memory (4800 vs 3)
Newer PCIe version (5 vs 3)
Higher base frequency (3.2GHz vs 2.1GHz)
Larger L3 cache size (22.5MB vs 20MB)
More modern manufacturing process (10nm vs 32nm)