Intel Xeon E3 1220L 's Advantages
Higher base frequency (2.2GHz vs 2.1GHz)
Larger L3 cache size (3MB vs 1.5MB)
Lower TDP (20W vs 45W)
Intel Xeon D 1541 's Advantages
Released 4 years and 7 months late
Higher specification of memory (4 vs 3)
More modern manufacturing process (14nm vs 32nm)