Intel Xeon W 2135 's Advantages
Higher base frequency (3.7GHz vs 3.5GHz)
Lower TDP (140W vs 175W)
Xeon w3 2525 's Advantages
Released 7 years late
Higher specification of memory (4400 vs 2666)
Newer PCIe version (5 vs 3)
Larger L3 cache size (22.5MB vs 8.25MB)
More modern manufacturing process (10nm vs 14nm)