Intel Xeon E5 2643 v3 's Advantages
Released 2 years and 4 months late
Higher specification of memory (2133 vs 3)
Higher base frequency (3.4GHz vs 1GHz)
Larger L3 cache size (20MB vs 6MB)
More modern manufacturing process (22nm vs 32nm)
Intel Xeon E3 1105C 's Advantages
Lower TDP (25W vs 135W)