Intel Xeon E7 8870 's Advantages
Larger L3 cache size (30MB vs 25MB)
Intel Xeon E5 1680 v2 's Advantages
Released 2 years and 5 months late
Higher specification of memory (DDR3-1866 vs DDR3)
Higher base frequency (3GHz vs 2.4GHz)
More modern manufacturing process (22nm vs 32nm)