Opteron 6284 SE 's Advantages
Higher specification of memory (1600 vs 4)
Higher base frequency (2.7GHz vs 2.4GHz)
Lower TDP (140W vs 165W)
Xeon Platinum 8260 's Advantages
Released 6 years and 7 months late
Larger L3 cache size (35.75MB vs 8MB)
More modern manufacturing process (14nm vs 32nm)