Intel Xeon E3 1220L 's Advantages
Lower TDP (20W vs 140W)
Intel Xeon W 2191B 's Advantages
Released 6 years and 8 months late
Higher specification of memory (2666 vs 3)
Higher base frequency (2.3GHz vs 2.2GHz)
Larger L3 cache size (24.75MB vs 3MB)
More modern manufacturing process (14nm vs 32nm)