Intel Xeon E5 2678 v3 's Advantages
Lower TDP (120W vs 270W)
Intel Xeon w5 3425 's Advantages
Released 8 years and 1 months late
Higher specification of memory (DDR5-4800 vs DDR3)
Newer PCIe version (5 vs 3)
Higher base frequency (3.2GHz vs 2.5GHz)
More modern manufacturing process (10nm vs 22nm)