Xeon E7 8870 's Advantages
Higher base frequency (2.4GHz vs 2GHz)
Larger L3 cache size (30MB vs 25MB)
Intel Xeon E5 4620 v3 's Advantages
Released 4 years and 2 months late
Higher specification of memory (1866 vs 1333)
More modern manufacturing process (22nm vs 32nm)
Lower TDP (105W vs 130W)