Xeon D 2799 's Advantages
Released 11 years and 11 months late
Higher specification of memory (3200 vs 3)
Newer PCIe version (4 vs 2)
Larger L3 cache size (30MB vs 12MB)
More modern manufacturing process (10nm vs 32nm)
Intel Xeon E5620 's Advantages
Lower TDP (80W vs 129W)