Xeon Platinum 8280 's Advantages
Higher base frequency (2.7GHz vs 1.8GHz)
Lower TDP (205W vs 225W)
Xeon 6756E 's Advantages
Released 5 years and 6 months late
Higher specification of memory (6400 vs 4)
Larger L3 cache size (96MB vs 38.5MB)
More modern manufacturing process (5nm vs 14nm)