Intel Xeon E7 8870 v3 's Advantages
Released 5 years and 3 months late
Higher specification of memory (1866 vs 1333)
Newer PCIe version (3 vs 2)
Larger L3 cache size (45MB vs 18MB)
More modern manufacturing process (22nm vs 45nm)
Xeon X7542 's Advantages
Higher base frequency (2.666GHz vs 2.1GHz)
Lower TDP (130W vs 140W)