Intel Xeon E3 1225 v3 's Advantages
Higher base frequency (3.2GHz vs 2.4GHz)
Lower TDP (84W vs 85W)
Intel Xeon E5 2620 v3 's Advantages
Released 1 years and 3 months late
Higher specification of memory (1866 vs 1600)
Larger L3 cache size (15MB vs 8MB)