Intel Xeon D 1521 's Advantages
Lower TDP (45W vs 235W)
Intel Xeon Gold 6348 's Advantages
Released 5 years and 5 months late
Higher specification of memory (3200 vs 4)
Newer PCIe version (4 vs 3)
Higher base frequency (2.6GHz vs 2.4GHz)
Larger L3 cache size (42MB vs 1.5MB)
More modern manufacturing process (10nm vs 14nm)