Xeon Platinum 8280M 's Advantages
Higher base frequency (2.7GHz vs 2.5GHz)
Lower TDP (205W vs 270W)
Intel Xeon w7 3455 's Advantages
Released 4 years and 2 months late
Higher specification of memory (4800 vs 2933)
Newer PCIe version (5 vs 3)
Larger L3 cache size (67.5MB vs 38.5MB)
More modern manufacturing process (10nm vs 14nm)