Intel Xeon E5 2637 v2 's Advantages
Higher base frequency (3.5GHz vs 3.4GHz)
Lower TDP (130W vs 250W)
Intel Xeon W 3335 's Advantages
Released 7 years and 10 months late
Higher specification of memory (3200 vs 3)
Newer PCIe version (4 vs 3)
Larger L3 cache size (24MB vs 10MB)
More modern manufacturing process (10nm vs 22nm)