Xeon E7 4830 's Advantages
Higher specification of memory (1333 vs 3)
Larger L3 cache size (24MB vs 10MB)
Intel Xeon E5 2609 v2 's Advantages
Released 2 years and 5 months late
Higher base frequency (2.5GHz vs 2.133GHz)
More modern manufacturing process (22nm vs 32nm)
Lower TDP (80W vs 105W)