Intel Xeon E3 1275 v2 's Advantages
Higher base frequency (3.5GHz vs 2.1GHz)
Lower TDP (77W vs 120W)
Intel Xeon w3 2423 's Advantages
Released 10 years and 9 months late
Higher specification of memory (4400 vs 3)
Newer PCIe version (5 vs 3)
Larger L3 cache size (15MB vs 8MB)
More modern manufacturing process (10nm vs 22nm)