Xeon E7 8870 's Advantages
Higher specification of memory (1333 vs 3)
Higher base frequency (2.4GHz vs 1.8GHz)
Larger L3 cache size (30MB vs 6MB)
Intel Xeon E3 1258L v4 's Advantages
Released 4 years and 2 months late
More modern manufacturing process (14nm vs 32nm)
Lower TDP (47W vs 130W)