Intel Xeon E5 2609 v2 's Advantages
Released 1 years and 4 months late
Higher base frequency (2.5GHz vs 1GHz)
Larger L3 cache size (10MB vs 6MB)
More modern manufacturing process (22nm vs 32nm)
Intel Xeon E3 1105C 's Advantages
Lower TDP (25W vs 80W)