Intel Xeon E 2124 's Advantages
Released 8 years and 2 months late
Higher specification of memory (4 vs 3)
Newer PCIe version (3 vs 2)
Higher base frequency (3.4GHz vs 2.4GHz)
More modern manufacturing process (14nm vs 32nm)
Lower TDP (72W vs 80W)
Intel Xeon E5620 's Advantages
Larger L3 cache size (12MB vs 8MB)