Xeon E7 4870 's Advantages
Lower TDP (130W vs 230W)
Intel Xeon Gold 6342 's Advantages
Released 10 years late
Higher specification of memory (3200 vs 1333)
Higher base frequency (2.8GHz vs 2.4GHz)
Larger L3 cache size (36MB vs 30MB)
More modern manufacturing process (10nm vs 32nm)