Intel Xeon W 2123 's Advantages
Released 6 years and 3 months late
Higher specification of memory (DDR4-2666 vs DDR3)
Larger L3 cache size (8.25MB vs 8MB)
More modern manufacturing process (14nm vs 32nm)
Intel Xeon E3 1290 's Advantages
Lower TDP (95W vs 120W)