Intel Xeon E3 1220 v2 's Advantages
Higher base frequency (3.1GHz vs 2.1GHz)
Lower TDP (69W vs 105W)
Intel Xeon E5 4650 v3 's Advantages
Released 3 years and 1 months late
Higher specification of memory (DDR4-2133 vs DDR3)
Larger L3 cache size (30MB vs 8MB)