Xeon Platinum 8260M 's Advantages
Higher base frequency (2.4GHz vs 2GHz)
Lower TDP (165W vs 350W)
Intel Xeon Platinum 8580 's Advantages
Released 5 years late
Higher specification of memory (5600 vs 4)
Larger L3 cache size (300MB vs 35.75MB)
More modern manufacturing process (10nm vs 14nm)