Intel Xeon E7 8870 's Advantages
Higher base frequency (2.4GHz vs 1.7GHz)
Larger L3 cache size (30MB vs 1.5MB)
Intel Xeon D 1537 's Advantages
Released 4 years and 7 months late
Higher specification of memory (4 vs 3)
More modern manufacturing process (14nm vs 32nm)
Lower TDP (35W vs 130W)