Xeon E7 8870 's Advantages
Larger L3 cache size (30MB vs 8.25MB)
Lower TDP (130W vs 140W)
Intel Xeon W 2133 's Advantages
Released 6 years and 4 months late
Higher specification of memory (2666 vs 1333)
Higher base frequency (3.6GHz vs 2.4GHz)
More modern manufacturing process (14nm vs 32nm)