Intel Xeon Gold 6421N 's Advantages
Released 4 years and 1 months late
Higher specification of memory (DDR5-4400 vs DDR4)
Larger L3 cache size (60MB vs 16.5MB)
More modern manufacturing process (10nm vs 14nm)
Intel Xeon Platinum 8256 's Advantages
Higher base frequency (3.8GHz vs 1.8GHz)
Lower TDP (105W vs 185W)