Intel Xeon w5 3425 's Advantages
Released 12 years and 11 months late
Higher specification of memory (4800 vs 1333)
Newer PCIe version (5 vs 2)
Higher base frequency (3.2GHz vs 1.866GHz)
Larger L3 cache size (30MB vs 18MB)
More modern manufacturing process (10nm vs 45nm)
Xeon E7520 's Advantages
Lower TDP (95W vs 270W)