Intel Xeon E3 1284L v4 's Advantages
Higher base frequency (2.9GHz vs 2.5GHz)
Lower TDP (47W vs 140W)
Intel Xeon W 2170B 's Advantages
Released 2 years and 6 months late
Higher specification of memory (2666 vs 1866)
Larger L3 cache size (19.25MB vs 6MB)