Intel Xeon Platinum 8558 's Advantages
Released 11 months late
Higher specification of memory (DDR5-5200 vs DDR5-4800)
Larger L3 cache size (260MB vs 60MB)
More modern manufacturing process (7nm vs 10nm)
Intel Xeon Gold 6438M 's Advantages
Higher base frequency (2.2GHz vs 2.1GHz)
Lower TDP (205W vs 330W)