Intel Xeon E5 2620 v2 's Advantages
Larger L3 cache size (15MB vs 12MB)
Lower TDP (80W vs 105W)
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)
Higher base frequency (2.8GHz vs 2.1GHz)
More modern manufacturing process (10nm vs 22nm)