Intel Xeon E3 1220L 's Advantages
Lower TDP (20W vs 45W)
Intel Xeon E3 1265L v3 's Advantages
Released 2 years and 2 months late
Higher specification of memory (DDR3 vs DDR3)
Higher base frequency (2.5GHz vs 2.2GHz)
Larger L3 cache size (8MB vs 3MB)
More modern manufacturing process (22nm vs 32nm)