Xeon E 2124 's Advantages
Released 3 years and 10 months late
Higher specification of memory (2666 vs 1866)
Higher base frequency (3.3GHz vs 2.4GHz)
More modern manufacturing process (14nm vs 22nm)
Lower TDP (71W vs 85W)
Intel Xeon E5 2620 v3 's Advantages
Larger L3 cache size (15MB vs 8MB)