Intel Xeon E3 1565L v5 's Advantages
Lower TDP (35W vs 140W)
Intel Xeon W 2155 's Advantages
Released 1 years and 3 months late
Higher specification of memory (DDR4-2666 vs DDR3)
Higher base frequency (3.3GHz vs 2.5GHz)
Larger L3 cache size (13.75MB vs 8MB)