Intel Xeon E5 2649 v3 's Advantages
Released 1 years and 3 months late
Larger L3 cache size (25MB vs 8MB)
Intel Xeon E3 1220 v3 's Advantages
Higher specification of memory (DDR3-1600 vs DDR3)
Higher base frequency (3.1GHz vs 2.3GHz)
Lower TDP (80W vs 105W)