Xeon E5540 's Advantages
Higher specification of memory (1066 vs 3)
Higher base frequency (2.533GHz vs 1.8GHz)
Intel Xeon E5 1428L 's Advantages
Released 3 years and 2 months late
Larger L3 cache size (15MB vs 8MB)
More modern manufacturing process (32nm vs 45nm)
Lower TDP (60W vs 80W)