Intel Xeon E5 4640 v3 's Advantages
Lower TDP (105W vs 135W)
Xeon D 2899NT 's Advantages
Released 8 years and 6 months late
Higher specification of memory (3200 vs 1866)
Newer PCIe version (4 vs 3)
Higher base frequency (2.2GHz vs 1.9GHz)
More modern manufacturing process (10nm vs 22nm)