Intel Xeon E5 2640 's Advantages
Larger L3 cache size (15MB vs 6MB)
Intel Xeon E3 1283L v4 's Advantages
Released 3 years and 3 months late
Higher specification of memory (1866 vs 3)
Higher base frequency (2.9GHz vs 2.5GHz)
More modern manufacturing process (14nm vs 32nm)
Lower TDP (47W vs 95W)