The Asus X751LN supports a 1,600MHz processor memory clock speed which is faster than most laptops that were launched more than two years ago. Most medium processor core notebook PCs that were launched around the same time as it support a 133MHz processor memory clock speed. This notebook 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 type and age to the X751LN.
Amongst comparable types of portable PC the worst supported memory clock speeds supported by processor is 133MHz.