Intel Xeon E3 1275 v2 's Advantages
Higher base frequency (3.5GHz vs 2.4GHz)
Lower TDP (77W vs 129W)
Xeon D 2799 's Advantages
Released 9 years and 9 months late
Higher specification of memory (3200 vs 3)
Newer PCIe version (4 vs 3)
Larger L3 cache size (30MB vs 8MB)
More modern manufacturing process (10nm vs 22nm)