Intel Xeon w5 3425 's Advantages
Higher base frequency (3.2GHz vs 2.1GHz)
Lower TDP (270W vs 330W)
Intel Xeon Platinum 8558 's Advantages
Released 10 months late
Higher specification of memory (5200 vs 4800)
Larger L3 cache size (260MB vs 30MB)
More modern manufacturing process (7nm vs 10nm)