Intel Xeon E3 1284L v4 's Advantages
Higher base frequency (2.9GHz vs 2GHz)
More modern manufacturing process (14nm vs 22nm)
Lower TDP (47W vs 115W)
Intel Xeon E7 4809 v3 's Advantages
Higher specification of memory (1866 vs 1866)
Larger L3 cache size (20MB vs 6MB)