The Lenovo L440 supports a 1,600MHz processor memory clock speed which is faster than most portable PCs of a similar age and spec to it. Most laptops that were released around the same time as it support a 133MHz processor memory clock speed. This portable PC also supports 1 and 333MHz processor memory clock speeds.
A 1,600MHz processor memory clock speed is in fact the best supported memory clock speeds supported by processor amongst all comparable spec notebook PCs that have been around for a similar time to the L440.
Amongst comparable types of laptop the worst supported memory clock speeds supported by processor is 133MHz.