Intel Xeon E5 1691 v3 's Advantages
Larger L3 cache size (35MB vs 24MB)
Lower TDP (135W vs 250W)
Intel Xeon W 3335 's Advantages
Released 6 years and 10 months late
Higher specification of memory (3200 vs 2133)
Newer PCIe version (4 vs 3)
Higher base frequency (3.4GHz vs 2.5GHz)
More modern manufacturing process (10nm vs 22nm)