Intel Xeon D 1557 's Advantages
Lower TDP (45W vs 105W)
Intel Xeon Silver 4309Y 's Advantages
Released 5 years and 2 months late
Higher specification of memory (DDR4-2667 vs DDR3)
Newer PCIe version (4 vs 3)
Higher base frequency (2.8GHz vs 1.5GHz)
Larger L3 cache size (12MB vs 1.5MB)
More modern manufacturing process (10nm vs 14nm)