Xeon D 2899NT 's Advantages
Released 4 years and 8 months late
Higher specification of memory (3200 vs 2933)
Newer PCIe version (4 vs 3)
Higher base frequency (2.2GHz vs 2.1GHz)
More modern manufacturing process (10nm vs 14nm)
Lower TDP (135W vs 250W)
Intel Xeon Platinum 9221 's Advantages
Larger L3 cache size (71.5MB vs 30MB)