Xeon E7 8870 's Advantages
Higher specification of memory (1333 vs 4)
Lower TDP (130W vs 205W)
Xeon Platinum 8280 's Advantages
Released 7 years and 8 months late
Higher base frequency (2.7GHz vs 2.4GHz)
Larger L3 cache size (38.5MB vs 30MB)
More modern manufacturing process (14nm vs 32nm)