Xeon E7520 's Advantages
Lower TDP (95W vs 125W)
Xeon D 2798NT 's Advantages
Released 11 years and 11 months late
Higher specification of memory (3200 vs 1333)
Newer PCIe version (4 vs 2)
Higher base frequency (2.1GHz vs 1.866GHz)
Larger L3 cache size (30MB vs 18MB)
More modern manufacturing process (10nm vs 45nm)