Xeon E7520 's Advantages
Lower TDP (95W vs 385W)
Xeon w9 3595X 's Advantages
Released 14 years and 5 months late
Higher specification of memory (4800 vs 1333)
Newer PCIe version (5 vs 2)
Higher base frequency (2GHz vs 1.866GHz)
Larger L3 cache size (112.5MB vs 18MB)
More modern manufacturing process (10nm vs 45nm)