Intel Xeon E3 1284L v4 's Advantages
Released 9 months late
Higher base frequency (2.9GHz vs 2.5GHz)
More modern manufacturing process (14nm vs 22nm)
Lower TDP (47W vs 85W)
Intel Xeon E5 2628 v3 's Advantages
Higher specification of memory (2133 vs 1866)
Larger L3 cache size (20MB vs 6MB)