Intel Xeon E3 1220 v2 's Advantages
Higher base frequency (3.1GHz vs 2.8GHz)
Lower TDP (69W vs 80W)
Xeon W 1390 's Advantages
Released 9 years late
Higher specification of memory (3200 vs 3)
Newer PCIe version (4 vs 3)
Larger L3 cache size (16MB vs 8MB)
More modern manufacturing process (14nm vs 22nm)