Intel Xeon E5 2420 's Advantages
Lower TDP (95W vs 250W)
Intel Xeon W 3335 's Advantages
Released 9 years and 2 months late
Higher specification of memory (3200 vs 3)
Higher base frequency (3.4GHz vs 1.9GHz)
Larger L3 cache size (24MB vs 15MB)
More modern manufacturing process (10nm vs 32nm)