Intel Xeon E5 2643 v3 's Advantages
Higher base frequency (3.4GHz vs 3.3GHz)
Larger L3 cache size (20MB vs 8MB)
Intel Xeon E3 1225 v5 's Advantages
Released 1 years and 1 months late
Higher specification of memory (2133 vs 2133)
More modern manufacturing process (14nm vs 22nm)
Lower TDP (80W vs 135W)