Xeon D 1715TER 's Advantages
Released 12 years and 11 months late
Higher specification of memory (2667 vs 1333)
Newer PCIe version (4 vs 2)
Larger L3 cache size (10MB vs 8MB)
More modern manufacturing process (10nm vs 45nm)
Lower TDP (50W vs 130W)
Xeon W5580 's Advantages
Higher base frequency (3.2GHz vs 2.4GHz)