Xeon E7 4820 's Advantages
Lower TDP (105W vs 270W)
Intel Xeon W 3365 's Advantages
Released 10 years and 3 months late
Higher specification of memory (3200 vs 1333)
Higher base frequency (2.7GHz vs 2GHz)
Larger L3 cache size (48MB vs 18MB)
More modern manufacturing process (10nm vs 32nm)