Intel Xeon E3 1290 's Advantages
Higher base frequency (3.6GHz vs 2.8GHz)
Lower TDP (95W vs 140W)
Intel Xeon E5 1603 v3 's Advantages
Released 3 years and 4 months late
Higher specification of memory (1866 vs 3)
Larger L3 cache size (10MB vs 8MB)
More modern manufacturing process (22nm vs 32nm)