Intel Xeon D 1518 's Advantages
Higher base frequency (2.2GHz vs 1.9GHz)
Lower TDP (35W vs 350W)
Intel Xeon Platinum 8490H 's Advantages
Released 7 years and 10 months late
Higher specification of memory (4800 vs 4)
Newer PCIe version (5 vs 3)
Larger L3 cache size (112.5MB vs 1.5MB)
More modern manufacturing process (10nm vs 14nm)