Intel Xeon E7 8870 's Advantages
Higher base frequency (2.4GHz vs 2GHz)
Larger L3 cache size (30MB vs 8MB)
Intel Xeon E3 1505L v5 's Advantages
Released 4 years and 6 months late
Higher specification of memory (2133 vs 3)
More modern manufacturing process (14nm vs 32nm)
Lower TDP (25W vs 130W)