Intel Xeon w7 3455 's Advantages
Released 7 years and 11 months late
Higher specification of memory (DDR5-4800 vs DDR3)
Newer PCIe version (5 vs 3)
Higher base frequency (2.5GHz vs 2.2GHz)
Larger L3 cache size (67.5MB vs 1.5MB)
More modern manufacturing process (10nm vs 14nm)
Intel Xeon D 1520 's Advantages
Lower TDP (45W vs 270W)