Xeon D 2799 's Advantages
Released 9 years and 11 months late
Higher specification of memory (3200 vs 3)
Newer PCIe version (4 vs 3)
Higher base frequency (2.4GHz vs 2.1GHz)
Larger L3 cache size (30MB vs 20MB)
More modern manufacturing process (10nm vs 32nm)
Intel Xeon E5 2658 's Advantages
Lower TDP (95W vs 129W)