The Lenovo X240 supports a 1,600MHz processor memory clock speed which is faster than most notebook PCs of this age and spec. Most portable PCs of this age and spec 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 actually the best supported memory clock speeds supported by processor amongst all laptops of a comparable age and type to the X240.
Amongst comparable types of notebook PC the worst supported memory clock speeds supported by processor is 133MHz.