Intel Xeon W 2123 's Advantages
Released 2 years and 11 months late
Higher specification of memory (2666 vs 1866)
Higher base frequency (3.6GHz vs 2.8GHz)
More modern manufacturing process (14nm vs 22nm)
Lower TDP (120W vs 140W)
Intel Xeon E5 1603 v3 's Advantages
Larger L3 cache size (10MB vs 8.25MB)