Intel Xeon E7 8870 's Advantages
Higher base frequency (2.4GHz vs 2.2GHz)
Lower TDP (130W vs 140W)
Intel Xeon E7 8860 v3 's Advantages
Released 4 years and 2 months late
Higher specification of memory (DDR3 vs DDR3)
Larger L3 cache size (40MB vs 30MB)
More modern manufacturing process (22nm vs 32nm)