The Lenovo L540 supports a 1,600MHz processor memory clock speed which is faster than most portable PCs of a similar age and type to it. Most medium processor core notebook PCs that have been on the market for a similar time to it support a 133MHz processor memory clock speed. This portable PC also supports 1 and 333MHz processor memory clock speeds.
This notebook PC's memory clock speeds supported by processor (1,600MHz) is in fact the best supported memory clock speeds supported by processor amongst all laptops of a similar type and age to the L540.
A 133MHz processor memory clock speed is the worst supported memory clock speeds supported by processor amongst similar types of notebook PC.