Intel Xeon E3 1283L v4 's Advantages
Released 3 years and 1 months late
Higher specification of memory (1866 vs 3)
Higher base frequency (2.9GHz vs 2.4GHz)
More modern manufacturing process (14nm vs 32nm)
Lower TDP (47W vs 95W)
Intel Xeon E5 4640 's Advantages
Larger L3 cache size (20MB vs 6MB)