Intel Xeon E3 1270 's Advantages
Higher base frequency (3.4GHz vs 2.9GHz)
Lower TDP (80W vs 120W)
Intel Xeon W 2102 's Advantages
Released 6 years and 4 months late
Higher specification of memory (2666 vs 3)
Larger L3 cache size (8.25MB vs 8MB)
More modern manufacturing process (14nm vs 32nm)