Xeon Platinum 8260M 's Advantages
Higher base frequency (2.4GHz vs 2.2GHz)
Lower TDP (165W vs 270W)
Xeon Gold 6554S 's Advantages
Released 5 years late
Higher specification of memory (5200 vs 4)
Larger L3 cache size (180MB vs 35.75MB)
More modern manufacturing process (10nm vs 14nm)