Intel Xeon E3 1245 v5 's Advantages
Higher base frequency (3.5GHz vs 3.3GHz)
Lower TDP (80W vs 140W)
Intel Xeon W 2155 's Advantages
Released 1 years and 10 months late
Higher specification of memory (2666 vs 2133)
Larger L3 cache size (13.75MB vs 8MB)