Intel Xeon W 2125 's Advantages
Higher base frequency (4GHz vs 3.2GHz)
Intel Xeon W 1290 's Advantages
Released 2 years and 9 months late
Higher specification of memory (DDR4-2933 vs DDR4-2666)
Larger L3 cache size (20MB vs 8.25MB)
Lower TDP (80W vs 120W)