Intel Xeon E3 1220L 's Advantages
Lower TDP (20W vs 35W)
Intel Xeon W 11855M 's Advantages
Released 10 years and 1 months late
Higher specification of memory (3200 vs 3)
Newer PCIe version (4 vs 3)
Higher base frequency (3.2GHz vs 2.2GHz)
Larger L3 cache size (18MB vs 3MB)
More modern manufacturing process (10nm vs 32nm)