Intel Xeon E3 1220L v3 's Advantages
Higher specification of memory (DDR3-1600 vs DDR3)
Lower TDP (13W vs 115W)
Intel Xeon E7 4809 v3 's Advantages
Released 1 years and 9 months late
Higher base frequency (2GHz vs 1.1GHz)
Larger L3 cache size (20MB vs 4MB)