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 18MB)
More modern manufacturing process (10nm vs 32nm)
Xeon E7 2820 's Advantages
Lower TDP (105W vs 135W)