Intel Xeon E5 4640 v3 's Advantages
Lower TDP (105W vs 290W)
Xeon w5 3525 's Advantages
Released 9 years and 2 months late
Higher specification of memory (4800 vs 1866)
Newer PCIe version (5 vs 3)
Higher base frequency (3.2GHz vs 1.9GHz)
Larger L3 cache size (45MB vs 30MB)
More modern manufacturing process (10nm vs 22nm)