Intel Xeon E3 1270 's Advantages
Higher base frequency (3.4GHz vs 3.1GHz)
Lower TDP (80W vs 270W)
Intel Xeon w5 3435X 's Advantages
Released 11 years and 10 months late
Higher specification of memory (4800 vs 3)
Newer PCIe version (5 vs 3)
Larger L3 cache size (45MB vs 8MB)
More modern manufacturing process (10nm vs 32nm)