Intel Xeon E3 1283L v4 's Advantages
Released 9 months late
Higher specification of memory (DDR3-1866 vs DDR3)
Higher base frequency (2.9GHz vs 2GHz)
More modern manufacturing process (14nm vs 22nm)
Lower TDP (47W vs 120W)
Intel Xeon E5 2686 v3 's Advantages
Larger L3 cache size (45MB vs 6MB)