Intel Xeon D 1587 's Advantages
Lower TDP (65W vs 330W)
Intel Xeon Platinum 8558 's Advantages
Released 7 years and 10 months late
Higher specification of memory (DDR5-5200 vs DDR3)
Newer PCIe version (5 vs 3)
Higher base frequency (2.1GHz vs 1.7GHz)
Larger L3 cache size (260MB vs 1.5MB)
More modern manufacturing process (7nm vs 14nm)