Intel Xeon E5 1603 v3 's Advantages
Released 3 years and 5 months late
Higher specification of memory (1866 vs 3)
Higher base frequency (2.8GHz vs 2.2GHz)
Larger L3 cache size (10MB vs 3MB)
More modern manufacturing process (22nm vs 32nm)
Intel Xeon E3 1220L 's Advantages
Lower TDP (20W vs 140W)