Intel Xeon E3 1283L v4 's Advantages
Released 9 months late
Higher base frequency (2.9GHz vs 2.8GHz)
More modern manufacturing process (14nm vs 22nm)
Lower TDP (47W vs 140W)
Intel Xeon E5 1603 v3 's Advantages
Higher specification of memory (1866 vs 1866)
Larger L3 cache size (10MB vs 6MB)