Intel Xeon E3 1290 's Advantages
Higher base frequency (3.6GHz vs 1.9GHz)
Lower TDP (95W vs 105W)
Intel Xeon E5 4640 v3 's Advantages
Released 4 years and 1 months late
Higher specification of memory (1866 vs 3)
Larger L3 cache size (30MB vs 8MB)
More modern manufacturing process (22nm vs 32nm)