Intel Xeon Gold 5420 's Advantages
Lower TDP (205W vs 350W)
Intel Xeon Platinum 8558P 's Advantages
Released 11 months late
Higher specification of memory (DDR5-4800 vs DDR5-4400)
Higher base frequency (2.7GHz vs 2GHz)
Larger L3 cache size (260MB vs 52.5MB)
More modern manufacturing process (7nm vs 10nm)