Intel Xeon Silver 4309Y 's Advantages
Released 7 years and 7 months late
Higher specification of memory (DDR4-2667 vs DDR3)
Newer PCIe version (4 vs 3)
More modern manufacturing process (10nm vs 22nm)
Lower TDP (105W vs 130W)
Intel Xeon E5 2643 v2 's Advantages
Higher base frequency (3.5GHz vs 2.8GHz)
Larger L3 cache size (15MB vs 12MB)