Xeon Platinum 8260M 's Advantages
Higher base frequency (2.4GHz vs 1.8GHz)
Lower TDP (165W vs 185W)
Intel Xeon Gold 6421N 's Advantages
Released 4 years and 1 months late
Higher specification of memory (4400 vs 4)
Larger L3 cache size (60MB vs 35.75MB)
More modern manufacturing process (10nm vs 14nm)