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)
Larger L3 cache size (30MB vs 10MB)
More modern manufacturing process (10nm vs 32nm)
Lower TDP (129W vs 130W)
Intel Xeon E5 1620 's Advantages
Higher base frequency (3.6GHz vs 2.4GHz)