Intel Xeon W 2145 's Advantages
Released 2 years and 2 months late
Higher specification of memory (2666 vs 1866)
Higher base frequency (3.7GHz vs 2GHz)
More modern manufacturing process (14nm vs 22nm)
Intel Xeon E7 4809 v3 's Advantages
Larger L3 cache size (20MB vs 11MB)
Lower TDP (115W vs 140W)