Intel Xeon E5 1620 v3 's Advantages
Higher base frequency (3.5GHz vs 3.2GHz)
Larger L3 cache size (10MB vs 8.25MB)
Intel Xeon W 2104 's Advantages
Released 2 years and 11 months late
Higher specification of memory (2666 vs 2133)
More modern manufacturing process (14nm vs 22nm)
Lower TDP (120W vs 140W)