Intel Xeon Silver 4309Y 's Advantages
Released 11 years and 1 months late
Higher specification of memory (2667 vs 3)
Newer PCIe version (4 vs 2)
Higher base frequency (2.8GHz vs 2.666GHz)
More modern manufacturing process (10nm vs 32nm)
Intel Xeon E5640 's Advantages
Lower TDP (80W vs 105W)