Xeon W 1390's Advantages
Higher base frequency (2.8GHz vs 2.6GHz)
Larger L3 cache size (16MB vs 12MB)
Xeon E 2414's Advantages
Released 2 years and 7 months late
Higher specification of memory (DDR5-4800 vs DDR4-3200)
Newer PCIe version (5 vs 4)
More modern manufacturing process (10nm vs 14nm)
Lower TDP (55W vs 80W)