Xeon E7 2850 's Advantages
Lower TDP (130W vs 135W)
Xeon D 2899NT 's Advantages
Released 12 years and 8 months late
Higher specification of memory (3200 vs 1333)
Higher base frequency (2.2GHz vs 2GHz)
Larger L3 cache size (30MB vs 24MB)
More modern manufacturing process (10nm vs 32nm)