Intel Xeon E5 4655 v3 's Advantages
Higher base frequency (2.9GHz vs 2.5GHz)
Larger L3 cache size (30MB vs 19.25MB)
Lower TDP (135W vs 140W)
Intel Xeon W 2170B 's Advantages
Released 2 years and 6 months late
Higher specification of memory (2666 vs 2133)
More modern manufacturing process (14nm vs 22nm)