Xeon E7 8870 's Advantages
Higher base frequency (2.4GHz vs 2GHz)
Larger L3 cache size (30MB vs 8MB)
Intel Xeon E3 1578L v5 's Advantages
Released 5 years and 1 months late
Higher specification of memory (2133 vs 1333)
More modern manufacturing process (14nm vs 32nm)
Lower TDP (45W vs 130W)