Xeon w3 2525 's Advantages
Released 12 years and 5 months late
Higher specification of memory (4400 vs 3)
Newer PCIe version (5 vs 3)
Higher base frequency (3.5GHz vs 3GHz)
Larger L3 cache size (22.5MB vs 5MB)
More modern manufacturing process (10nm vs 32nm)
Intel Xeon E5 2637 's Advantages
Lower TDP (80W vs 175W)