Intel Xeon E5 4669 v3 's Advantages
Released 4 years and 2 months late
Higher specification of memory (DDR4-2133 vs DDR3)
Larger L3 cache size (45MB vs 3MB)
More modern manufacturing process (22nm vs 32nm)
Intel Xeon E3 1220L 's Advantages
Higher base frequency (2.2GHz vs 2.1GHz)
Lower TDP (20W vs 135W)