Intel Xeon E5 2643 v3 's Advantages
Released 1 years and 3 months late
Higher specification of memory (2133 vs 1600)
Higher base frequency (3.4GHz vs 3.1GHz)
Larger L3 cache size (20MB vs 8MB)
Intel Xeon E3 1220 v3 's Advantages
Lower TDP (80W vs 135W)