Xeon w7 2555X 's Advantages
Released 9 years and 2 months late
Higher specification of memory (4800 vs 1866)
Newer PCIe version (5 vs 3)
Higher base frequency (3.3GHz vs 2.1GHz)
More modern manufacturing process (10nm vs 22nm)
Intel Xeon E7 8870 v3 's Advantages
Larger L3 cache size (45MB vs 33.75MB)
Lower TDP (140W vs 210W)