Xeon E7 4820 's Advantages
Higher specification of memory (1333 vs 3)
Larger L3 cache size (18MB vs 8MB)
Intel Xeon E3 1230 v2 's Advantages
Released 1 years and 1 months late
Higher base frequency (3.3GHz vs 2GHz)
More modern manufacturing process (22nm vs 32nm)
Lower TDP (69W vs 105W)