Intel Xeon D 1520 's Advantages
Lower TDP (45W vs 145W)
Xeon 6516P B 's Advantages
Released 9 years and 11 months late
Higher specification of memory (4800 vs 4)
Newer PCIe version (5 vs 3)
Higher base frequency (2.3GHz vs 2.2GHz)
Larger L3 cache size (80MB vs 1.5MB)
More modern manufacturing process (5nm vs 14nm)