Intel Xeon D 1528 's Advantages
Lower TDP (35W vs 250W)
Intel Xeon Platinum 9221 's Advantages
Released 3 years and 5 months late
Higher specification of memory (2933 vs 4)
Higher base frequency (2.1GHz vs 1.9GHz)
Larger L3 cache size (71.5MB vs 1.5MB)