Intel Xeon E5 2665 's Advantages
Lower TDP (115W vs 290W)
Xeon w5 3525 's Advantages
Released 12 years and 5 months late
Higher specification of memory (4800 vs 3)
Newer PCIe version (5 vs 3)
Higher base frequency (3.2GHz vs 2.4GHz)
Larger L3 cache size (45MB vs 20MB)
More modern manufacturing process (10nm vs 32nm)