Intel Xeon E3 1515M v5 's Advantages
Lower TDP (45W vs 140W)
Intel Xeon W 2135 's Advantages
Released 1 years and 7 months late
Higher specification of memory (2666 vs 2133)
Higher base frequency (3.7GHz vs 2.8GHz)
Larger L3 cache size (8.25MB vs 8MB)