Intel Xeon W 11855M 's Advantages
Higher base frequency (3.2GHz vs 2GHz)
Lower TDP (35W vs 350W)
Intel Xeon Platinum 8580 's Advantages
Released 2 years and 7 months late
Higher specification of memory (5600 vs 3200)
Newer PCIe version (5 vs 4)
Larger L3 cache size (300MB vs 18MB)