Intel Xeon E3 1290 's Advantages
Higher base frequency (3.6GHz vs 3.2GHz)
Lower TDP (95W vs 120W)
Intel Xeon W 2140B 's Advantages
Released 6 years and 7 months late
Higher specification of memory (2666 vs 3)
Larger L3 cache size (11MB vs 8MB)
More modern manufacturing process (14nm vs 32nm)