Intel Xeon D 1520 's Advantages
Higher base frequency (2.2GHz vs 2GHz)
Lower TDP (45W vs 270W)
Intel Xeon Platinum 8581V 's Advantages
Released 8 years and 9 months late
Higher specification of memory (4800 vs 4)
Newer PCIe version (5 vs 3)
Larger L3 cache size (300MB vs 1.5MB)
More modern manufacturing process (10nm vs 14nm)