Intel Xeon E3 1220L 's Advantages
Lower TDP (20W vs 80W)
Intel Xeon W 1290 's Advantages
Released 9 years and 1 months late
Higher specification of memory (DDR4-2933 vs DDR3)
Higher base frequency (3.2GHz vs 2.2GHz)
Larger L3 cache size (20MB vs 3MB)
More modern manufacturing process (14nm vs 32nm)